55964638 has 16 divisors (see below), whose sum is σ = 85587840. Its totient is φ = 27440856.

The previous prime is 55964617. The next prime is 55964651. The reversal of 55964638 is 83646955.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20773 + ... + 23311.

It is an arithmetic number, because the mean of its divisors is an integer number (5349240).

Almost surely, 2^55964638 is an apocalyptic number.

55964638 is a deficient number, since it is larger than the sum of its proper divisors (29623202).

55964638 is a wasteful number, since it uses less digits than its factorization.

55964638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751.

The product of its digits is 777600, while the sum is 46.

The square root of 55964638 is about 7480.9516774271. The cubic root of 55964638 is about 382.5056897498.

The spelling of 55964638 in words is "fifty-five million, nine hundred sixty-four thousand, six hundred thirty-eight".