55725245 has 4 divisors (see below), whose sum is σ = 66870300. Its totient is φ = 44580192.

The previous prime is 55725227. The next prime is 55725253. The reversal of 55725245 is 54252755.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29398084 + 26327161 = 5422^2 + 5131^2 .

It is a cyclic number.

It is not a de Polignac number, because 55725245 - 2⁶ = 55725181 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, 5572520 + ... + 5572529.

It is an arithmetic number, because the mean of its divisors is an integer number (16717575).

Almost surely, 2^55725245 is an apocalyptic number.

It is an amenable number.

55725245 is a deficient number, since it is larger than the sum of its proper divisors (11145055).

55725245 is a wasteful number, since it uses less digits than its factorization.

55725245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11145054.

The product of its digits is 70000, while the sum is 35.

The square root of 55725245 is about 7464.9343600597. The cubic root of 55725245 is about 381.9595111642.

The spelling of 55725245 in words is "fifty-five million, seven hundred twenty-five thousand, two hundred forty-five".