51150986 has 4 divisors (see below), whose sum is σ = 76726482. Its totient is φ = 25575492.

The previous prime is 51150941. The next prime is 51151007. The reversal of 51150986 is 68905115.

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

It can be written as a sum of positive squares in only one way, i.e., 40386025 + 10764961 = 6355^2 + 3281^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12787745 + ... + 12787748.

Almost surely, 2^51150986 is an apocalyptic number.

51150986 is a deficient number, since it is larger than the sum of its proper divisors (25575496).

51150986 is a wasteful number, since it uses less digits than its factorization.

51150986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25575495.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 51150986 is about 7151.9917505545. The cubic root of 51150986 is about 371.2085777983.

The spelling of 51150986 in words is "fifty-one million, one hundred fifty thousand, nine hundred eighty-six".