55399324 has 6 divisors (see below), whose sum is σ = 96948824. Its totient is φ = 27699660.

The previous prime is 55399321. The next prime is 55399327. The reversal of 55399324 is 42399355.

It is an interprime number because it is at equal distance from previous prime (55399321) and next prime (55399327).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55399321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6924912 + ... + 6924919.

Almost surely, 2^55399324 is an apocalyptic number.

It is an amenable number.

55399324 is a deficient number, since it is larger than the sum of its proper divisors (41549500).

55399324 is a wasteful number, since it uses less digits than its factorization.

55399324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13849835 (or 13849833 counting only the distinct ones).

The product of its digits is 145800, while the sum is 40.

The square root of 55399324 is about 7443.0722151542. The cubic root of 55399324 is about 381.2133973997.

The spelling of 55399324 in words is "fifty-five million, three hundred ninety-nine thousand, three hundred twenty-four".