54357640 has 32 divisors (see below), whose sum is σ = 123687000. Its totient is φ = 21497344.

The previous prime is 54357631. The next prime is 54357659. The reversal of 54357640 is 4675345.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34269316 + 20088324 = 5854^2 + 4482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 54357596 and 54357605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4075 + ... + 11194.

Almost surely, 2^54357640 is an apocalyptic number.

It is an amenable number.

54357640 is an abundant number, since it is smaller than the sum of its proper divisors (69329360).

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

54357640 is a wasteful number, since it uses less digits than its factorization.

54357640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15369 (or 15365 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 54357640 is about 7372.7633896660. The cubic root of 54357640 is about 378.8089206043.

The spelling of 54357640 in words is "fifty-four million, three hundred fifty-seven thousand, six hundred forty".