55403415 has 24 divisors (see below), whose sum is σ = 96688800. Its totient is φ = 29346624.

The previous prime is 55403371. The next prime is 55403429. The reversal of 55403415 is 51430455.

It is not a de Polignac number, because 55403415 - 2⁶ = 55403351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2574 + ... + 10836.

It is an arithmetic number, because the mean of its divisors is an integer number (4028700).

Almost surely, 2^55403415 is an apocalyptic number.

55403415 is a deficient number, since it is larger than the sum of its proper divisors (41285385).

55403415 is a wasteful number, since it uses less digits than its factorization.

55403415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8423 (or 8420 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 55403415 is about 7443.3470293948. The cubic root of 55403415 is about 381.2227808212. Note that the first 3 decimals are identical.

The spelling of 55403415 in words is "fifty-five million, four hundred three thousand, four hundred fifteen".