55767770 has 8 divisors (see below), whose sum is σ = 100382004. Its totient is φ = 22307104.

The previous prime is 55767743. The next prime is 55767787. The reversal of 55767770 is 7776755.

It can be written as a sum of positive squares in 2 ways, for example, as 46881409 + 8886361 = 6847^2 + 2981^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55767770² = 6220088341545800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2788379 + ... + 2788398.

Almost surely, 2^55767770 is an apocalyptic number.

55767770 is a deficient number, since it is larger than the sum of its proper divisors (44614234).

55767770 is a wasteful number, since it uses less digits than its factorization.

55767770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5576784.

The product of its (nonzero) digits is 360150, while the sum is 44.

The square root of 55767770 is about 7467.7821339404. The cubic root of 55767770 is about 382.0566466619.

The spelling of 55767770 in words is "fifty-five million, seven hundred sixty-seven thousand, seven hundred seventy".