55764940 has 96 divisors (see below), whose sum is σ = 149184000. Its totient is φ = 17357760.

The previous prime is 55764931. The next prime is 55764959. The reversal of 55764940 is 4946755.

It is a junction number, because it is equal to n+sod(n) for n = 55764893 and 55764902.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75091 + ... + 75829.

It is an arithmetic number, because the mean of its divisors is an integer number (1554000).

Almost surely, 2^55764940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55764940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74592000).

55764940 is an abundant number, since it is smaller than the sum of its proper divisors (93419060).

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

55764940 is a wasteful number, since it uses less digits than its factorization.

55764940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 55764940 is about 7467.5926509150. The cubic root of 55764940 is about 382.0501839171.

The spelling of 55764940 in words is "fifty-five million, seven hundred sixty-four thousand, nine hundred forty".