55245817 has 8 divisors (see below), whose sum is σ = 60767712. Its totient is φ = 50222260.

The previous prime is 55245791. The next prime is 55245823. The reversal of 55245817 is 71854255.

It is not a de Polignac number, because 55245817 - 2¹⁵ = 55213049 is a prime.

It is a pancake number, because a pancake can be divided into 55245817 parts by 10511 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55245857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19423 + ... + 22084.

It is an arithmetic number, because the mean of its divisors is an integer number (7595964).

Almost surely, 2^55245817 is an apocalyptic number.

It is an amenable number.

55245817 is a deficient number, since it is larger than the sum of its proper divisors (5521895).

55245817 is an equidigital number, since it uses as much as digits as its factorization.

55245817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41540 (or 41518 counting only the distinct ones).

The product of its digits is 56000, while the sum is 37.

The square root of 55245817 is about 7432.7529893035. The cubic root of 55245817 is about 380.8609679565.

The spelling of 55245817 in words is "fifty-five million, two hundred forty-five thousand, eight hundred seventeen".