55055403 has 32 divisors (see below), whose sum is σ = 88764480. Its totient is φ = 33523200.

The previous prime is 55055387. The next prime is 55055417. The reversal of 55055403 is 30455055.

It is not a de Polignac number, because 55055403 - 2⁴ = 55055387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55055443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34675 + ... + 36227.

It is an arithmetic number, because the mean of its divisors is an integer number (2773890).

Almost surely, 2^55055403 is an apocalyptic number.

55055403 is a deficient number, since it is larger than the sum of its proper divisors (33709077).

55055403 is a wasteful number, since it uses less digits than its factorization.

55055403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676 (or 1670 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 55055403 is about 7419.9328164074. The cubic root of 55055403 is about 380.4228971479.

The spelling of 55055403 in words is "fifty-five million, fifty-five thousand, four hundred three".