51022386 has 20 divisors (see below), whose sum is σ = 114328302. Its totient is φ = 17007408.

The previous prime is 51022369. The next prime is 51022399. The reversal of 51022386 is 68322015.

It can be written as a sum of positive squares in only one way, i.e., 50680161 + 342225 = 7119^2 + 585^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 157315 + ... + 157638.

Almost surely, 2^51022386 is an apocalyptic number.

51022386 is an abundant number, since it is smaller than the sum of its proper divisors (63305916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51022386 is a wasteful number, since it uses less digits than its factorization.

51022386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314967 (or 314958 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 51022386 is about 7142.9955900868. The cubic root of 51022386 is about 370.8972284072.

The spelling of 51022386 in words is "fifty-one million, twenty-two thousand, three hundred eighty-six".