55764040 has 32 divisors (see below), whose sum is σ = 129519360. Its totient is φ = 21585600.

The previous prime is 55764017. The next prime is 55764041. The reversal of 55764040 is 4046755.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 55763993 and 55764011.

It is not an unprimeable number, because it can be changed into a prime (55764041) 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 7 ways as a sum of consecutive naturals, for example, 21246 + ... + 23725.

It is an arithmetic number, because the mean of its divisors is an integer number (4047480).

Almost surely, 2^55764040 is an apocalyptic number.

It is an amenable number.

55764040 is an abundant number, since it is smaller than the sum of its proper divisors (73755320).

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

55764040 is a wasteful number, since it uses less digits than its factorization.

55764040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45013 (or 45009 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 55764040 is about 7467.5323902880. The cubic root of 55764040 is about 382.0481285814.

The spelling of 55764040 in words is "fifty-five million, seven hundred sixty-four thousand, forty".