55972245 has 32 divisors (see below), whose sum is σ = 108373248. Its totient is φ = 24081408.

The previous prime is 55972243. The next prime is 55972277. The reversal of 55972245 is 54227955.

It is not a de Polignac number, because 55972245 - 2¹ = 55972243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55972243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13894 + ... + 17463.

It is an arithmetic number, because the mean of its divisors is an integer number (3386664).

Almost surely, 2^55972245 is an apocalyptic number.

It is an amenable number.

55972245 is a deficient number, since it is larger than the sum of its proper divisors (52401003).

55972245 is a wasteful number, since it uses less digits than its factorization.

55972245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31389.

The product of its digits is 126000, while the sum is 39.

The square root of 55972245 is about 7481.4600847695. The cubic root of 55972245 is about 382.5230196749.

The spelling of 55972245 in words is "fifty-five million, nine hundred seventy-two thousand, two hundred forty-five".