56551100 has 18 divisors (see below), whose sum is σ = 122716104. Its totient is φ = 22620400.

The previous prime is 56551091. The next prime is 56551109. The reversal of 56551100 is 115565.

It is an interprime number because it is at equal distance from previous prime (56551091) and next prime (56551109).

It is a super-2 number, since 2×56551100² = 6396053822420000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56551109) 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 5 ways as a sum of consecutive naturals, for example, 282656 + ... + 282855.

Almost surely, 2^56551100 is an apocalyptic number.

56551100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56551100 is an abundant number, since it is smaller than the sum of its proper divisors (66165004).

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

56551100 is a wasteful number, since it uses less digits than its factorization.

56551100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565525 (or 565518 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 56551100 is about 7520.0465424092. The cubic root of 56551100 is about 383.8371614978.

Adding to 56551100 its reverse (115565), we get a palindrome (56666665).

The spelling of 56551100 in words is "fifty-six million, five hundred fifty-one thousand, one hundred".