55726464 has 32 divisors (see below), whose sum is σ = 148024440. Its totient is φ = 18575360.

The previous prime is 55726427. The next prime is 55726469. The reversal of 55726464 is 46462755.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55726469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72177 + ... + 72944.

Almost surely, 2^55726464 is an apocalyptic number.

It is an amenable number.

55726464 is an abundant number, since it is smaller than the sum of its proper divisors (92297976).

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

55726464 is a wasteful number, since it uses less digits than its factorization.

55726464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145138 (or 145126 counting only the distinct ones).

The product of its digits is 201600, while the sum is 39.

The square root of 55726464 is about 7465.0160080203. The cubic root of 55726464 is about 381.9622962888.

The spelling of 55726464 in words is "fifty-five million, seven hundred twenty-six thousand, four hundred sixty-four".