55375770 has 32 divisors (see below), whose sum is σ = 133151040. Its totient is φ = 14739200.

The previous prime is 55375769. The next prime is 55375799. The reversal of 55375770 is 7757355.

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, 18370 + ... + 21170.

It is an arithmetic number, because the mean of its divisors is an integer number (4160970).

Almost surely, 2^55375770 is an apocalyptic number.

55375770 is an abundant number, since it is smaller than the sum of its proper divisors (77775270).

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

55375770 is a wasteful number, since it uses less digits than its factorization.

55375770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470.

The product of its (nonzero) digits is 128625, while the sum is 39.

The square root of 55375770 is about 7441.4897702006. The cubic root of 55375770 is about 381.1593632073.

The spelling of 55375770 in words is "fifty-five million, three hundred seventy-five thousand, seven hundred seventy".