55533774 has 16 divisors (see below), whose sum is σ = 111750912. Its totient is φ = 18397368.

The previous prime is 55533773. The next prime is 55533787. The reversal of 55533774 is 47733555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55533773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27414 + ... + 29369.

It is an arithmetic number, because the mean of its divisors is an integer number (6984432).

Almost surely, 2^55533774 is an apocalyptic number.

55533774 is an abundant number, since it is smaller than the sum of its proper divisors (56217138).

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

55533774 is a wasteful number, since it uses less digits than its factorization.

55533774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56951.

The product of its digits is 220500, while the sum is 39.

The square root of 55533774 is about 7452.0986305872. The cubic root of 55533774 is about 381.5215403522.

The spelling of 55533774 in words is "fifty-five million, five hundred thirty-three thousand, seven hundred seventy-four".