55974733 has 4 divisors (see below), whose sum is σ = 56018428. Its totient is φ = 55931040.

The previous prime is 55974719. The next prime is 55974749. The reversal of 55974733 is 33747955.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27008809 + 28965924 = 5197^2 + 5382^2 .

It is a cyclic number.

It is not a de Polignac number, because 55974733 - 2⁵ = 55974701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55974733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55974773) 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, 19866 + ... + 22507.

It is an arithmetic number, because the mean of its divisors is an integer number (14004607).

Almost surely, 2^55974733 is an apocalyptic number.

It is an amenable number.

55974733 is a deficient number, since it is larger than the sum of its proper divisors (43695).

55974733 is a wasteful number, since it uses less digits than its factorization.

55974733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43694.

The product of its digits is 396900, while the sum is 43.

The square root of 55974733 is about 7481.6263606251. The cubic root of 55974733 is about 382.5286873838.

The spelling of 55974733 in words is "fifty-five million, nine hundred seventy-four thousand, seven hundred thirty-three".