55615424 has 28 divisors (see below), whose sum is σ = 111184944. Its totient is φ = 27600384.

The previous prime is 55615423. The next prime is 55615453. The reversal of 55615424 is 42451655.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55615423) 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, 5597 + ... + 11939.

Almost surely, 2^55615424 is an apocalyptic number.

It is an amenable number.

55615424 is a deficient number, since it is larger than the sum of its proper divisors (55569520).

55615424 is a wasteful number, since it uses less digits than its factorization.

55615424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6492 (or 6482 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The square root of 55615424 is about 7457.5749409577. The cubic root of 55615424 is about 381.7084295009.

The spelling of 55615424 in words is "fifty-five million, six hundred fifteen thousand, four hundred twenty-four".