51158356 has 12 divisors (see below), whose sum is σ = 91216692. Its totient is φ = 25096448.

The previous prime is 51158333. The next prime is 51158363. The reversal of 51158356 is 65385115.

It can be written as a sum of positive squares in 2 ways, for example, as 26357956 + 24800400 = 5134^2 + 4980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120445 + ... + 120868.

It is an arithmetic number, because the mean of its divisors is an integer number (7601391).

Almost surely, 2^51158356 is an apocalyptic number.

It is an amenable number.

51158356 is a deficient number, since it is larger than the sum of its proper divisors (40058336).

51158356 is a wasteful number, since it uses less digits than its factorization.

51158356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241370 (or 241368 counting only the distinct ones).

The product of its digits is 18000, while the sum is 34.

The square root of 51158356 is about 7152.5069730829. The cubic root of 51158356 is about 371.2264052541.

The spelling of 51158356 in words is "fifty-one million, one hundred fifty-eight thousand, three hundred fifty-six".