55745307 has 16 divisors (see below), whose sum is σ = 86177280. Its totient is φ = 35547336.

The previous prime is 55745303. The next prime is 55745309. The reversal of 55745307 is 70354755.

55745307 is a `hidden beast` number, since 55 + 74 + 530 + 7 = 666.

It is not a de Polignac number, because 55745307 - 2² = 55745303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55745303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44263 + ... + 45504.

It is an arithmetic number, because the mean of its divisors is an integer number (5386080).

Almost surely, 2^55745307 is an apocalyptic number.

55745307 is a deficient number, since it is larger than the sum of its proper divisors (30431973).

55745307 is a wasteful number, since it uses less digits than its factorization.

55745307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89799 (or 89793 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 36.

The square root of 55745307 is about 7466.2779883956. The cubic root of 55745307 is about 382.0053428892.

The spelling of 55745307 in words is "fifty-five million, seven hundred forty-five thousand, three hundred seven".