55487724 has 24 divisors (see below), whose sum is σ = 129865008. Its totient is φ = 18439680.

The previous prime is 55487723. The next prime is 55487743. The reversal of 55487724 is 42778455.

It is not an unprimeable number, because it can be changed into a prime (55487723) 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, 2817 + ... + 10904.

It is an arithmetic number, because the mean of its divisors is an integer number (5411042).

Almost surely, 2^55487724 is an apocalyptic number.

It is an amenable number.

55487724 is an abundant number, since it is smaller than the sum of its proper divisors (74377284).

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

55487724 is a wasteful number, since it uses less digits than its factorization.

55487724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14065 (or 14063 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The square root of 55487724 is about 7449.0082561372. The cubic root of 55487724 is about 381.4160554424.

The spelling of 55487724 in words is "fifty-five million, four hundred eighty-seven thousand, seven hundred twenty-four".