56857500 has 270 divisors, whose sum is σ = 216624408. Its totient is φ = 12312000.

The previous prime is 56857483. The next prime is 56857501. The reversal of 56857500 is 575865.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56857501) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 2992491 + ... + 2992509.

Almost surely, 2^56857500 is an apocalyptic number.

56857500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56857500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108312204).

56857500 is an abundant number, since it is smaller than the sum of its proper divisors (159766908).

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

56857500 is a wasteful number, since it uses less digits than its factorization.

56857500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 56857500 is about 7540.3912365341. The cubic root of 56857500 is about 384.5291370712.

The spelling of 56857500 in words is "fifty-six million, eight hundred fifty-seven thousand, five hundred".