55409624 has 16 divisors (see below), whose sum is σ = 109361400. Its totient is φ = 26246592.

The previous prime is 55409623. The next prime is 55409639. The reversal of 55409624 is 42690455.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55409623) 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, 182117 + ... + 182420.

Almost surely, 2^55409624 is an apocalyptic number.

It is an amenable number.

55409624 is a deficient number, since it is larger than the sum of its proper divisors (53951776).

55409624 is a wasteful number, since it uses less digits than its factorization.

55409624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364562 (or 364558 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 55409624 is about 7443.7641015819. The cubic root of 55409624 is about 381.2370213624.

The spelling of 55409624 in words is "fifty-five million, four hundred nine thousand, six hundred twenty-four".