51860789 has 4 divisors (see below), whose sum is σ = 51886080. Its totient is φ = 51835500.

The previous prime is 51860741. The next prime is 51860813. The reversal of 51860789 is 98706815.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51860789 - 2⁸ = 51860533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51860719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9269 + ... + 13770.

It is an arithmetic number, because the mean of its divisors is an integer number (12971520).

Almost surely, 2^51860789 is an apocalyptic number.

It is an amenable number.

51860789 is a deficient number, since it is larger than the sum of its proper divisors (25291).

51860789 is a wasteful number, since it uses less digits than its factorization.

51860789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25290.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 51860789 is about 7201.4435358475. The cubic root of 51860789 is about 372.9177368438.

The spelling of 51860789 in words is "fifty-one million, eight hundred sixty thousand, seven hundred eighty-nine".