55647770 has 32 divisors (see below), whose sum is σ = 106444800. Its totient is φ = 20886336.

The previous prime is 55647769. The next prime is 55647773. The reversal of 55647770 is 7774655.

It is not an unprimeable number, because it can be changed into a prime (55647773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19367 + ... + 22053.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^55647770 is an apocalyptic number.

55647770 is a deficient number, since it is larger than the sum of its proper divisors (50797030).

55647770 is a wasteful number, since it uses less digits than its factorization.

55647770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822.

The product of its (nonzero) digits is 205800, while the sum is 41.

The square root of 55647770 is about 7459.7432931703. The cubic root of 55647770 is about 381.7824158589.

The spelling of 55647770 in words is "fifty-five million, six hundred forty-seven thousand, seven hundred seventy".