55871245 has 4 divisors (see below), whose sum is σ = 67045500. Its totient is φ = 44696992.

The previous prime is 55871239. The next prime is 55871251. The reversal of 55871245 is 54217855.

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

It is an interprime number because it is at equal distance from previous prime (55871239) and next prime (55871251).

It can be written as a sum of positive squares in 2 ways, for example, as 6041764 + 49829481 = 2458^2 + 7059^2 .

It is a cyclic number.

It is not a de Polignac number, because 55871245 - 2¹¹ = 55869197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5587120 + ... + 5587129.

It is an arithmetic number, because the mean of its divisors is an integer number (16761375).

Almost surely, 2^55871245 is an apocalyptic number.

It is an amenable number.

55871245 is a deficient number, since it is larger than the sum of its proper divisors (11174255).

55871245 is a wasteful number, since it uses less digits than its factorization.

55871245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11174254.

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

The square root of 55871245 is about 7474.7070176697. The cubic root of 55871245 is about 382.2927979122.

The spelling of 55871245 in words is "fifty-five million, eight hundred seventy-one thousand, two hundred forty-five".