51586798 has 4 divisors (see below), whose sum is σ = 77380200. Its totient is φ = 25793398.

The previous prime is 51586793. The next prime is 51586807. The reversal of 51586798 is 89768515.

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

It is a super-2 number, since 2×51586798² = 5322395455785608, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) 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 (51586793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12896698 + ... + 12896701.

It is an arithmetic number, because the mean of its divisors is an integer number (19345050).

Almost surely, 2^51586798 is an apocalyptic number.

51586798 is a deficient number, since it is larger than the sum of its proper divisors (25793402).

51586798 is a wasteful number, since it uses less digits than its factorization.

51586798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25793401.

The product of its digits is 604800, while the sum is 49.

The square root of 51586798 is about 7182.3950044536. The cubic root of 51586798 is about 372.2598436995.

The spelling of 51586798 in words is "fifty-one million, five hundred eighty-six thousand, seven hundred ninety-eight".