51364786 has 16 divisors (see below), whose sum is σ = 88996320. Its totient is φ = 21974080.

The previous prime is 51364763. The next prime is 51364787. The reversal of 51364786 is 68746315.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51364787) 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, 68296 + ... + 69043.

It is an arithmetic number, because the mean of its divisors is an integer number (5562270).

Almost surely, 2^51364786 is an apocalyptic number.

51364786 is a deficient number, since it is larger than the sum of its proper divisors (37631534).

51364786 is a wasteful number, since it uses less digits than its factorization.

51364786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137369.

The product of its digits is 120960, while the sum is 40.

The square root of 51364786 is about 7166.9230496776. The cubic root of 51364786 is about 371.7250492676.

The spelling of 51364786 in words is "fifty-one million, three hundred sixty-four thousand, seven hundred eighty-six".