55552817 has 4 divisors (see below), whose sum is σ = 55583856. Its totient is φ = 55521780.

The previous prime is 55552811. The next prime is 55552841. The reversal of 55552817 is 71825555.

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 55552817 - 2⁴ = 55552801 is a prime.

It is a super-2 number, since 2×55552817² = 6172230953270978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55552811) 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, 12659 + ... + 16472.

It is an arithmetic number, because the mean of its divisors is an integer number (13895964).

Almost surely, 2^55552817 is an apocalyptic number.

It is an amenable number.

55552817 is a deficient number, since it is larger than the sum of its proper divisors (31039).

55552817 is a wasteful number, since it uses less digits than its factorization.

55552817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31038.

The product of its digits is 70000, while the sum is 38.

The square root of 55552817 is about 7453.3762148438. The cubic root of 55552817 is about 381.5651443543.

The spelling of 55552817 in words is "fifty-five million, five hundred fifty-two thousand, eight hundred seventeen".