55684724 has 24 divisors (see below), whose sum is σ = 105702408. Its totient is φ = 25564160.

The previous prime is 55684709. The next prime is 55684729. The reversal of 55684724 is 42748655.

It can be written as a sum of positive squares in 4 ways, for example, as 2131600 + 53553124 = 1460^2 + 7318^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55684729) 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, 7199 + ... + 12774.

It is an arithmetic number, because the mean of its divisors is an integer number (4404267).

Almost surely, 2^55684724 is an apocalyptic number.

It is an amenable number.

55684724 is a deficient number, since it is larger than the sum of its proper divisors (50017684).

55684724 is a wasteful number, since it uses less digits than its factorization.

55684724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20035 (or 20033 counting only the distinct ones).

The product of its digits is 268800, while the sum is 41.

The square root of 55684724 is about 7462.2197769833. The cubic root of 55684724 is about 381.8669072085.

The spelling of 55684724 in words is "fifty-five million, six hundred eighty-four thousand, seven hundred twenty-four".