54545454 has 64 divisors (see below), whose sum is σ = 124994880. Its totient is φ = 17625600.

The previous prime is 54545419. The next prime is 54545459. The reversal of 54545454 is 45454545.

54545454 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a super-2 number, since 2×54545454² = 5950413104132232, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

54545454 is an undulating number in base 10.

54545454 is a modest number, since divided by 545454 gives 54 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54545459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 398074 + ... + 398210.

It is an arithmetic number, because the mean of its divisors is an integer number (1953045).

Almost surely, 2^54545454 is an apocalyptic number.

54545454 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 54545454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62497440).

54545454 is an abundant number, since it is smaller than the sum of its proper divisors (70449426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54545454 is a wasteful number, since it uses less digits than its factorization.

54545454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 316 counting only the distinct ones).

The product of its digits is 160000, while the sum is 36.

The square root of 54545454 is about 7385.4894218325. The cubic root of 54545454 is about 379.2447001063.

Adding to 54545454 its reverse (45454545), we get a palindrome (99999999).

Subtracting from 54545454 its reverse (45454545), we obtain a palindrome (9090909).

The spelling of 54545454 in words is "fifty-four million, five hundred forty-five thousand, four hundred fifty-four".