55240245 has 16 divisors (see below), whose sum is σ = 98205120. Its totient is φ = 29461392.

The previous prime is 55240217. The next prime is 55240261. The reversal of 55240245 is 54204255.

It is not a de Polignac number, because 55240245 - 2¹² = 55236149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204459 + ... + 204728.

It is an arithmetic number, because the mean of its divisors is an integer number (6137820).

Almost surely, 2^55240245 is an apocalyptic number.

It is an amenable number.

55240245 is a deficient number, since it is larger than the sum of its proper divisors (42964875).

55240245 is a wasteful number, since it uses less digits than its factorization.

55240245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409201 (or 409195 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 55240245 is about 7432.3781523816. The cubic root of 55240245 is about 380.8481631942.

The spelling of 55240245 in words is "fifty-five million, two hundred forty thousand, two hundred forty-five".