51369764 has 24 divisors (see below), whose sum is σ = 96347328. Its totient is φ = 23902560.

The previous prime is 51369763. The next prime is 51369781. The reversal of 51369764 is 46796315.

It is not an unprimeable number, because it can be changed into a prime (51369763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4142 + ... + 10949.

It is an arithmetic number, because the mean of its divisors is an integer number (4014472).

Almost surely, 2^51369764 is an apocalyptic number.

It is an amenable number.

51369764 is a deficient number, since it is larger than the sum of its proper divisors (44977564).

51369764 is a wasteful number, since it uses less digits than its factorization.

51369764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15155 (or 15153 counting only the distinct ones).

The product of its digits is 136080, while the sum is 41.

The square root of 51369764 is about 7167.2703311651. The cubic root of 51369764 is about 371.7370574134.

The spelling of 51369764 in words is "fifty-one million, three hundred sixty-nine thousand, seven hundred sixty-four".