51322486 has 4 divisors (see below), whose sum is σ = 76983732. Its totient is φ = 25661242.

The previous prime is 51322483. The next prime is 51322487. The reversal of 51322486 is 68422315.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51322483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12830620 + ... + 12830623.

It is an arithmetic number, because the mean of its divisors is an integer number (19245933).

Almost surely, 2^51322486 is an apocalyptic number.

51322486 is a deficient number, since it is larger than the sum of its proper divisors (25661246).

51322486 is a wasteful number, since it uses less digits than its factorization.

51322486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25661245.

The product of its digits is 11520, while the sum is 31.

The square root of 51322486 is about 7163.9713846441. The cubic root of 51322486 is about 371.6229800672.

The spelling of 51322486 in words is "fifty-one million, three hundred twenty-two thousand, four hundred eighty-six".