55645275 has 48 divisors (see below), whose sum is σ = 106493184. Its totient is φ = 25111680.

The previous prime is 55645273. The next prime is 55645297. The reversal of 55645275 is 57254655.

It is not a de Polignac number, because 55645275 - 2¹ = 55645273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55645273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42937 + ... + 44213.

It is an arithmetic number, because the mean of its divisors is an integer number (2218608).

Almost surely, 2^55645275 is an apocalyptic number.

55645275 is a deficient number, since it is larger than the sum of its proper divisors (50847909).

55645275 is a wasteful number, since it uses less digits than its factorization.

55645275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1375 counting only the distinct ones).

The product of its digits is 210000, while the sum is 39.

The square root of 55645275 is about 7459.5760603402. The cubic root of 55645275 is about 381.7767099617.

The spelling of 55645275 in words is "fifty-five million, six hundred forty-five thousand, two hundred seventy-five".