55202551 has 4 divisors (see below), whose sum is σ = 55248912. Its totient is φ = 55156192.

The previous prime is 55202549. The next prime is 55202569. The reversal of 55202551 is 15520255.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55202551 - 2¹ = 55202549 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 (55202951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21346 + ... + 23791.

It is an arithmetic number, because the mean of its divisors is an integer number (13812228).

Almost surely, 2^55202551 is an apocalyptic number.

55202551 is a deficient number, since it is larger than the sum of its proper divisors (46361).

55202551 is a wasteful number, since it uses less digits than its factorization.

55202551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46360.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 55202551 is about 7429.8419229483. The cubic root of 55202551 is about 380.7615176868.

The spelling of 55202551 in words is "fifty-five million, two hundred two thousand, five hundred fifty-one".