51251716 has 12 divisors (see below), whose sum is σ = 90529488. Its totient is φ = 25386152.

The previous prime is 51251701. The next prime is 51251731. The reversal of 51251716 is 61715215.

51251716 = T₃₃ + T₃₄ + ... + T₆₇₄.

It is an interprime number because it is at equal distance from previous prime (51251701) and next prime (51251731).

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, 59446 + ... + 60301.

It is an arithmetic number, because the mean of its divisors is an integer number (7544124).

Almost surely, 2^51251716 is an apocalyptic number.

It is an amenable number.

51251716 is a deficient number, since it is larger than the sum of its proper divisors (39277772).

51251716 is a wasteful number, since it uses less digits than its factorization.

51251716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119858 (or 119856 counting only the distinct ones).

The product of its digits is 2100, while the sum is 28.

The square root of 51251716 is about 7159.0303812737. The cubic root of 51251716 is about 371.4520877475.

The spelling of 51251716 in words is "fifty-one million, two hundred fifty-one thousand, seven hundred sixteen".