57563940 has 192 divisors, whose sum is σ = 197406720. Its totient is φ = 12249600.

The previous prime is 57563911. The next prime is 57563941. The reversal of 57563940 is 4936575.

It is not an unprimeable number, because it can be changed into a prime (57563941) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 569890 + ... + 569990.

It is an arithmetic number, because the mean of its divisors is an integer number (1028160).

Almost surely, 2^57563940 is an apocalyptic number.

57563940 is the 6195-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57563940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98703360).

57563940 is an abundant number, since it is smaller than the sum of its proper divisors (139842780).

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

57563940 is a wasteful number, since it uses less digits than its factorization.

57563940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 57563940 is about 7587.0903513798. The cubic root of 57563940 is about 386.1151454740.

The spelling of 57563940 in words is "fifty-seven million, five hundred sixty-three thousand, nine hundred forty".