55772760 has 32 divisors (see below), whose sum is σ = 167318640. Its totient is φ = 14872704.

The previous prime is 55772747. The next prime is 55772779. The reversal of 55772760 is 6727755.

It is a super-2 number, since 2×55772760² = 6221201516035200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232267 + ... + 232506.

Almost surely, 2^55772760 is an apocalyptic number.

It is an amenable number.

55772760 is an abundant number, since it is smaller than the sum of its proper divisors (111545880).

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

55772760 is a wasteful number, since it uses less digits than its factorization.

55772760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464787 (or 464783 counting only the distinct ones).

The product of its (nonzero) digits is 102900, while the sum is 39.

The square root of 55772760 is about 7468.1162283403. The cubic root of 55772760 is about 382.0680415698.

The spelling of 55772760 in words is "fifty-five million, seven hundred seventy-two thousand, seven hundred sixty".