51192711251 has 8 divisors (see below), whose sum is σ = 55849617408. Its totient is φ = 46536309000.

The previous prime is 51192711247. The next prime is 51192711263. The reversal of 51192711251 is 15211729115.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51192711251 - 2² = 51192711247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51192719251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104846 + ... + 336716.

It is an arithmetic number, because the mean of its divisors is an integer number (6981202176).

Almost surely, 2^51192711251 is an apocalyptic number.

51192711251 is a deficient number, since it is larger than the sum of its proper divisors (4656906157).

51192711251 is a wasteful number, since it uses less digits than its factorization.

51192711251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251953.

The product of its digits is 6300, while the sum is 35.

The spelling of 51192711251 in words is "fifty-one billion, one hundred ninety-two million, seven hundred eleven thousand, two hundred fifty-one".