54645340 has 24 divisors (see below), whose sum is σ = 115636752. Its totient is φ = 21690240.

The previous prime is 54645329. The next prime is 54645347. The reversal of 54645340 is 4354645.

It is a super-2 number, since 2×54645340² = 5972226367431200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54645347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7809 + ... + 13048.

It is an arithmetic number, because the mean of its divisors is an integer number (4818198).

Almost surely, 2^54645340 is an apocalyptic number.

It is an amenable number.

54645340 is an abundant number, since it is smaller than the sum of its proper divisors (60991412).

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

54645340 is a wasteful number, since it uses less digits than its factorization.

54645340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20997 (or 20995 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 54645340 is about 7392.2486430044. The cubic root of 54645340 is about 379.4760553863.

Adding to 54645340 its reverse (4354645), we get a palindrome (58999985).

The spelling of 54645340 in words is "fifty-four million, six hundred forty-five thousand, three hundred forty".