55764919 has 16 divisors (see below), whose sum is σ = 65700160. Its totient is φ = 46344960.

The previous prime is 55764911. The next prime is 55764931. The reversal of 55764919 is 91946755.

It is a cyclic number.

It is not a de Polignac number, because 55764919 - 2³ = 55764911 is a prime.

It is a super-2 number, since 2×55764919² = 6219452382153122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55764911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30277 + ... + 32065.

It is an arithmetic number, because the mean of its divisors is an integer number (4106260).

Almost surely, 2^55764919 is an apocalyptic number.

55764919 is a deficient number, since it is larger than the sum of its proper divisors (9935241).

55764919 is a wasteful number, since it uses less digits than its factorization.

55764919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930.

The product of its digits is 340200, while the sum is 46.

The square root of 55764919 is about 7467.5912448393. The cubic root of 55764919 is about 382.0501359595.

The spelling of 55764919 in words is "fifty-five million, seven hundred sixty-four thousand, nine hundred nineteen".