55403359 has 12 divisors (see below), whose sum is σ = 61765200. Its totient is φ = 49649600.

The previous prime is 55403351. The next prime is 55403371. The reversal of 55403359 is 95330455.

It is a happy number.

It is not a de Polignac number, because 55403359 - 2³ = 55403351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55403351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5367 + ... + 11815.

It is an arithmetic number, because the mean of its divisors is an integer number (5147100).

Almost surely, 2^55403359 is an apocalyptic number.

55403359 is a deficient number, since it is larger than the sum of its proper divisors (6361841).

55403359 is a wasteful number, since it uses less digits than its factorization.

55403359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6542 (or 6531 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 34.

The square root of 55403359 is about 7443.3432676453. The cubic root of 55403359 is about 381.2226523786. Note that the first 3 decimals are identical.

The spelling of 55403359 in words is "fifty-five million, four hundred three thousand, three hundred fifty-nine".