57403540 has 24 divisors (see below), whose sum is σ = 121161600. Its totient is φ = 22844448.

The previous prime is 57403531. The next prime is 57403553. The reversal of 57403540 is 4530475.

It is a junction number, because it is equal to n+sod(n) for n = 57403499 and 57403508.

It is a congruent number.

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, 3232 + ... + 11191.

It is an arithmetic number, because the mean of its divisors is an integer number (5048400).

Almost surely, 2^57403540 is an apocalyptic number.

It is an amenable number.

57403540 is an abundant number, since it is smaller than the sum of its proper divisors (63758060).

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

57403540 is a wasteful number, since it uses less digits than its factorization.

57403540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14631 (or 14629 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 57403540 is about 7576.5123902756. The cubic root of 57403540 is about 385.7561795243.

The spelling of 57403540 in words is "fifty-seven million, four hundred three thousand, five hundred forty".