51236244001 has 4 divisors (see below), whose sum is σ = 51425307904. Its totient is φ = 51047180100.

The previous prime is 51236243959. The next prime is 51236244023. The reversal of 51236244001 is 10044263215.

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 a de Polignac number, because none of the positive numbers 2^k-51236244001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51236244701) 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, 94531545 + ... + 94532086.

It is an arithmetic number, because the mean of its divisors is an integer number (12856326976).

Almost surely, 2^51236244001 is an apocalyptic number.

It is an amenable number.

51236244001 is a deficient number, since it is larger than the sum of its proper divisors (189063903).

51236244001 is a wasteful number, since it uses less digits than its factorization.

51236244001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189063902.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 51236244001 in words is "fifty-one billion, two hundred thirty-six million, two hundred forty-four thousand, one".