55418253 has 16 divisors (see below), whose sum is σ = 81518400. Its totient is φ = 33207680.

The previous prime is 55418243. The next prime is 55418291. The reversal of 55418253 is 35281455.

It is not a de Polignac number, because 55418253 - 2⁸ = 55417997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55418203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6498 + ... + 12371.

It is an arithmetic number, because the mean of its divisors is an integer number (5094900).

Almost surely, 2^55418253 is an apocalyptic number.

It is an amenable number.

55418253 is a deficient number, since it is larger than the sum of its proper divisors (26100147).

55418253 is a wasteful number, since it uses less digits than its factorization.

55418253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18972.

The product of its digits is 24000, while the sum is 33.

The square root of 55418253 is about 7444.3436916897. The cubic root of 55418253 is about 381.2568104848.

The spelling of 55418253 in words is "fifty-five million, four hundred eighteen thousand, two hundred fifty-three".