55791764 has 12 divisors (see below), whose sum is σ = 111583584. Its totient is φ = 23910744.

The previous prime is 55791761. The next prime is 55791811. The reversal of 55791764 is 46719755.

55791764 is an admirable number.

It is a super-2 number, since 2×55791764² = 6225441860463392, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55791761) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 996254 + ... + 996309.

It is an arithmetic number, because the mean of its divisors is an integer number (9298632).

Almost surely, 2^55791764 is an apocalyptic number.

It is an amenable number.

55791764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55791764 is a wasteful number, since it uses less digits than its factorization.

55791764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992574 (or 1992572 counting only the distinct ones).

The product of its digits is 264600, while the sum is 44.

The square root of 55791764 is about 7469.3884622504. The cubic root of 55791764 is about 382.1114319067. Note that the first 3 decimals are identical.

The spelling of 55791764 in words is "fifty-five million, seven hundred ninety-one thousand, seven hundred sixty-four".