56072100 has 72 divisors (see below), whose sum is σ = 185418688. Its totient is φ = 12816000.

The previous prime is 56072063. The next prime is 56072101. The reversal of 56072100 is 127065.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (56072101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11251 + ... + 15450.

Almost surely, 2^56072100 is an apocalyptic number.

56072100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56072100 is an abundant number, since it is smaller than the sum of its proper divisors (129346588).

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

56072100 is a wasteful number, since it uses less digits than its factorization.

56072100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26725 (or 26718 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 56072100 is about 7488.1306078353. The cubic root of 56072100 is about 382.7503593984.

Adding to 56072100 its reverse (127065), we get a palindrome (56199165).

The spelling of 56072100 in words is "fifty-six million, seventy-two thousand, one hundred".