55645700 has 36 divisors (see below), whose sum is σ = 131731152. Its totient is φ = 20234400.

The previous prime is 55645679. The next prime is 55645721. The reversal of 55645700 is 754655.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55645679) and next prime (55645721).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24194 + ... + 26393.

Almost surely, 2^55645700 is an apocalyptic number.

55645700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55645700 is an abundant number, since it is smaller than the sum of its proper divisors (76085452).

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

55645700 is a wasteful number, since it uses less digits than its factorization.

55645700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50612 (or 50605 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 55645700 is about 7459.6045471593. The cubic root of 55645700 is about 381.7776819202. Note that the first 3 decimals are identical.

The spelling of 55645700 in words is "fifty-five million, six hundred forty-five thousand, seven hundred".