56120100 has 36 divisors (see below), whose sum is σ = 162375024. Its totient is φ = 14965280.

The previous prime is 56120087. The next prime is 56120101. The reversal of 56120100 is 102165.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 56120100.

It is not an unprimeable number, because it can be changed into a prime (56120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93234 + ... + 93833.

Almost surely, 2^56120100 is an apocalyptic number.

56120100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56120100 is an abundant number, since it is smaller than the sum of its proper divisors (106254924).

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

56120100 is a wasteful number, since it uses less digits than its factorization.

56120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187084 (or 187077 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 56120100 is about 7491.3349945120. The cubic root of 56120100 is about 382.8595448777.

Adding to 56120100 its reverse (102165), we get a palindrome (56222265).

The spelling of 56120100 in words is "fifty-six million, one hundred twenty thousand, one hundred".