55770638 has 16 divisors (see below), whose sum is σ = 104298624. Its totient is φ = 21728760.

The previous prime is 55770629. The next prime is 55770641. The reversal of 55770638 is 83607755.

It is a super-2 number, since 2×55770638² = 6220728125854088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55770595 and 55770604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180920 + ... + 181227.

It is an arithmetic number, because the mean of its divisors is an integer number (6518664).

Almost surely, 2^55770638 is an apocalyptic number.

55770638 is a deficient number, since it is larger than the sum of its proper divisors (48527986).

55770638 is a wasteful number, since it uses less digits than its factorization.

55770638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362167.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 55770638 is about 7467.9741563559. The cubic root of 55770638 is about 382.0631959626.

The spelling of 55770638 in words is "fifty-five million, seven hundred seventy thousand, six hundred thirty-eight".