51399962 has 8 divisors (see below), whose sum is σ = 77131956. Its totient is φ = 25689312.

The previous prime is 51399941. The next prime is 51399979. The reversal of 51399962 is 26999315.

It can be written as a sum of positive squares in 2 ways, for example, as 45144961 + 6255001 = 6719^2 + 2501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 3848 + ... + 10844.

Almost surely, 2^51399962 is an apocalyptic number.

51399962 is a deficient number, since it is larger than the sum of its proper divisors (25731994).

51399962 is a wasteful number, since it uses less digits than its factorization.

51399962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10672.

The product of its digits is 131220, while the sum is 44.

The square root of 51399962 is about 7169.3766814138. The cubic root of 51399962 is about 371.8098857064.

The spelling of 51399962 in words is "fifty-one million, three hundred ninety-nine thousand, nine hundred sixty-two".