55253917 has 4 divisors (see below), whose sum is σ = 55300320. Its totient is φ = 55207516.

The previous prime is 55253911. The next prime is 55253921. The reversal of 55253917 is 71935255.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55253917 - 2³ = 55253909 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 (55253911) 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, 21367 + ... + 23812.

It is an arithmetic number, because the mean of its divisors is an integer number (13825080).

Almost surely, 2^55253917 is an apocalyptic number.

It is an amenable number.

55253917 is a deficient number, since it is larger than the sum of its proper divisors (46403).

55253917 is a wasteful number, since it uses less digits than its factorization.

55253917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46402.

The product of its digits is 47250, while the sum is 37.

The square root of 55253917 is about 7433.2978549228. The cubic root of 55253917 is about 380.8795806663.

The spelling of 55253917 in words is "fifty-five million, two hundred fifty-three thousand, nine hundred seventeen".