55983774 has 64 divisors (see below), whose sum is σ = 142502400. Its totient is φ = 14535360.

The previous prime is 55983757. The next prime is 55983821. The reversal of 55983774 is 47738955.

It is a congruent number.

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, 21402 + ... + 23874.

It is an arithmetic number, because the mean of its divisors is an integer number (2226600).

Almost surely, 2^55983774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55983774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71251200).

55983774 is an abundant number, since it is smaller than the sum of its proper divisors (86518626).

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

55983774 is a wasteful number, since it uses less digits than its factorization.

55983774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510 (or 2496 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 48.

The square root of 55983774 is about 7482.2305497759. The cubic root of 55983774 is about 382.5492815310.

The spelling of 55983774 in words is "fifty-five million, nine hundred eighty-three thousand, seven hundred seventy-four".