51745365 has 64 divisors (see below), whose sum is σ = 111352320. Its totient is φ = 22256640.

The previous prime is 51745363. The next prime is 51745387. The reversal of 51745365 is 56354715.

51745365 is a `hidden beast` number, since 51 + 74 + 536 + 5 = 666.

It is not a de Polignac number, because 51745365 - 2¹ = 51745363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51745361) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14455 + ... + 17675.

It is an arithmetic number, because the mean of its divisors is an integer number (1739880).

Almost surely, 2^51745365 is an apocalyptic number.

It is an amenable number.

51745365 is an abundant number, since it is smaller than the sum of its proper divisors (59606955).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51745365 is a wasteful number, since it uses less digits than its factorization.

51745365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259 (or 3253 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 51745365 is about 7193.4251229856. The cubic root of 51745365 is about 372.6408698015.

The spelling of 51745365 in words is "fifty-one million, seven hundred forty-five thousand, three hundred sixty-five".