51311135401 has 8 divisors (see below), whose sum is σ = 51685874240. Its totient is φ = 50936476752.

The previous prime is 51311135357. The next prime is 51311135431. The reversal of 51311135401 is 10453111315.

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 51311135401 - 2²³ = 51302746793 is a prime.

It is a super-2 number, since 2×51311135401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51311135431) 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, 2003191 + ... + 2028643.

It is an arithmetic number, because the mean of its divisors is an integer number (6460734280).

Almost surely, 2^51311135401 is an apocalyptic number.

It is an amenable number.

51311135401 is a deficient number, since it is larger than the sum of its proper divisors (374738839).

51311135401 is a wasteful number, since it uses less digits than its factorization.

51311135401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40095.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 51311135401 its reverse (10453111315), we get a palindrome (61764246716).

The spelling of 51311135401 in words is "fifty-one billion, three hundred eleven million, one hundred thirty-five thousand, four hundred one".