51001442401 has 16 divisors (see below), whose sum is σ = 62777344000. Its totient is φ = 40348715328.

The previous prime is 51001442381. The next prime is 51001442411. The reversal of 51001442401 is 10424410015.

It is a cyclic number.

It is not a de Polignac number, because 51001442401 - 2²⁷ = 50867224673 is a prime.

It is a super-2 number, since 2×51001442401² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51001442411) 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 15 ways as a sum of consecutive naturals, for example, 1142815 + ... + 1186603.

It is an arithmetic number, because the mean of its divisors is an integer number (3923584000).

Almost surely, 2^51001442401 is an apocalyptic number.

It is an amenable number.

51001442401 is a deficient number, since it is larger than the sum of its proper divisors (11775901599).

51001442401 is a wasteful number, since it uses less digits than its factorization.

51001442401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56608.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 51001442401 its reverse (10424410015), we get a palindrome (61425852416).

The spelling of 51001442401 in words is "fifty-one billion, one million, four hundred forty-two thousand, four hundred one".