51322545 has 32 divisors (see below), whose sum is σ = 95212800. Its totient is φ = 26180352.

The previous prime is 51322519. The next prime is 51322559. The reversal of 51322545 is 54522315.

It is a happy number.

It is not a de Polignac number, because 51322545 - 2⁷ = 51322417 is a prime.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5160 + ... + 11369.

It is an arithmetic number, because the mean of its divisors is an integer number (2975400).

Almost surely, 2^51322545 is an apocalyptic number.

It is an amenable number.

51322545 is a deficient number, since it is larger than the sum of its proper divisors (43890255).

51322545 is a wasteful number, since it uses less digits than its factorization.

51322545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16566 (or 16560 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 51322545 is about 7163.9755024707. The cubic root of 51322545 is about 371.6231224723.

The spelling of 51322545 in words is "fifty-one million, three hundred twenty-two thousand, five hundred forty-five".