45454542 has 64 divisors (see below), whose sum is σ = 109278720. Its totient is φ = 12329856.

The previous prime is 45454531. The next prime is 45454543. The reversal of 45454542 is 24545454.

It is a super-2 number, since 2×45454542² = 4132230776859528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45454543) 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, 81328 + ... + 81884.

It is an arithmetic number, because the mean of its divisors is an integer number (1707480).

Almost surely, 2^45454542 is an apocalyptic number.

45454542 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 45454542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54639360).

45454542 is an abundant number, since it is smaller than the sum of its proper divisors (63824178).

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

45454542 is a wasteful number, since it uses less digits than its factorization.

45454542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665.

The product of its digits is 64000, while the sum is 33.

The square root of 45454542 is about 6741.9983684365. The cubic root of 45454542 is about 356.8829187108.

Adding to 45454542 its reverse (24545454), we get a palindrome (69999996).

The spelling of 45454542 in words is "forty-five million, four hundred fifty-four thousand, five hundred forty-two".