51197922001 has 4 divisors (see below), whose sum is σ = 52849467904. Its totient is φ = 49546376100.

The previous prime is 51197921993. The next prime is 51197922047. The reversal of 51197922001 is 10022979115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51197922001 - 2³ = 51197921993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51197922701) 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 3 ways as a sum of consecutive naturals, for example, 825772905 + ... + 825772966.

It is an arithmetic number, because the mean of its divisors is an integer number (13212366976).

Almost surely, 2^51197922001 is an apocalyptic number.

It is an amenable number.

51197922001 is a deficient number, since it is larger than the sum of its proper divisors (1651545903).

51197922001 is a wasteful number, since it uses less digits than its factorization.

51197922001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651545902.

The product of its (nonzero) digits is 11340, while the sum is 37.

The spelling of 51197922001 in words is "fifty-one billion, one hundred ninety-seven million, nine hundred twenty-two thousand, one".