55501770 has 32 divisors (see below), whose sum is σ = 141041088. Its totient is φ = 13929728.

The previous prime is 55501769. The next prime is 55501781. The reversal of 55501770 is 7710555.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53904 + ... + 54923.

It is an arithmetic number, because the mean of its divisors is an integer number (4407534).

Almost surely, 2^55501770 is an apocalyptic number.

55501770 is an abundant number, since it is smaller than the sum of its proper divisors (85539318).

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

55501770 is a wasteful number, since it uses less digits than its factorization.

55501770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108854.

The product of its (nonzero) digits is 6125, while the sum is 30.

The square root of 55501770 is about 7449.9510065503. The cubic root of 55501770 is about 381.4482362417.

The spelling of 55501770 in words is "fifty-five million, five hundred one thousand, seven hundred seventy".