57220056936 has 240 divisors, whose sum is σ = 196249996800. Its totient is φ = 15487972416.

The previous prime is 57220056931. The next prime is 57220056937. The reversal of 57220056936 is 63965002275.

57220056936 is a `hidden beast` number, since 57 + 2 + 2 + 0 + 0 + 569 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 57220056891 and 57220056900.

It is not an unprimeable number, because it can be changed into a prime (57220056931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 555865 + ... + 650711.

It is an arithmetic number, because the mean of its divisors is an integer number (817708320).

Almost surely, 2^57220056936 is an apocalyptic number.

57220056936 is a gapful number since it is divisible by the number (56) 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 57220056936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98124998400).

57220056936 is an abundant number, since it is smaller than the sum of its proper divisors (139029939864).

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

57220056936 is a wasteful number, since it uses less digits than its factorization.

57220056936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94898 (or 94878 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 57220056936 in words is "fifty-seven billion, two hundred twenty million, fifty-six thousand, nine hundred thirty-six".