51311157401 has 8 divisors (see below), whose sum is σ = 61190945664. Its totient is φ = 42068774880.

The previous prime is 51311157383. The next prime is 51311157419. The reversal of 51311157401 is 10475111315.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51311157383) and next prime (51311157419).

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 51311157401 - 2³⁰ = 50237415577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51311157461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159351260 + ... + 159351581.

It is an arithmetic number, because the mean of its divisors is an integer number (7648868208).

Almost surely, 2^51311157401 is an apocalyptic number.

It is an amenable number.

51311157401 is a deficient number, since it is larger than the sum of its proper divisors (9879788263).

51311157401 is a wasteful number, since it uses less digits than its factorization.

51311157401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318702871.

The product of its (nonzero) digits is 2100, while the sum is 29.

Adding to 51311157401 its reverse (10475111315), we get a palindrome (61786268716).

The spelling of 51311157401 in words is "fifty-one billion, three hundred eleven million, one hundred fifty-seven thousand, four hundred one".