57652440 has 128 divisors (see below), whose sum is σ = 186624000. Its totient is φ = 14194688.

The previous prime is 57652433. The next prime is 57652447. The reversal of 57652440 is 4425675.

It is an interprime number because it is at equal distance from previous prime (57652433) and next prime (57652447).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57652447) 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, 120121 + ... + 120599.

It is an arithmetic number, because the mean of its divisors is an integer number (1458000).

Almost surely, 2^57652440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57652440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93312000).

57652440 is an abundant number, since it is smaller than the sum of its proper divisors (128971560).

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

57652440 is a wasteful number, since it uses less digits than its factorization.

57652440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 57652440 is about 7592.9203867814. The cubic root of 57652440 is about 386.3129179770.

The spelling of 57652440 in words is "fifty-seven million, six hundred fifty-two thousand, four hundred forty".