55213574 has 16 divisors (see below), whose sum is σ = 90323520. Its totient is φ = 25159680.

The previous prime is 55213567. The next prime is 55213577. The reversal of 55213574 is 47531255.

55213574 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55213574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55213577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11387 + ... + 15494.

It is an arithmetic number, because the mean of its divisors is an integer number (5645220).

Almost surely, 2^55213574 is an apocalyptic number.

55213574 is a deficient number, since it is larger than the sum of its proper divisors (35109946).

55213574 is a wasteful number, since it uses less digits than its factorization.

55213574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26975.

The product of its digits is 21000, while the sum is 32.

The square root of 55213574 is about 7430.5836917432. The cubic root of 55213574 is about 380.7868598422.

The spelling of 55213574 in words is "fifty-five million, two hundred thirteen thousand, five hundred seventy-four".