57082578 has 32 divisors (see below), whose sum is σ = 133660800. Its totient is φ = 15911040.

The previous prime is 57082511. The next prime is 57082579. The reversal of 57082578 is 87528075.

It is a happy number.

It is a super-2 number, since 2×57082578² = 6516841422252168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (57082579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14853 + ... + 18296.

It is an arithmetic number, because the mean of its divisors is an integer number (4176900).

Almost surely, 2^57082578 is an apocalyptic number.

57082578 is an abundant number, since it is smaller than the sum of its proper divisors (76578222).

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

57082578 is a wasteful number, since it uses less digits than its factorization.

57082578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33202.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 57082578 is about 7555.3013176180. The cubic root of 57082578 is about 385.0358722970.

The spelling of 57082578 in words is "fifty-seven million, eighty-two thousand, five hundred seventy-eight".