51311052013501 has 32 divisors (see below), whose sum is σ = 59424901344000. Its totient is φ = 43395286049280.

The previous prime is 51311052013493. The next prime is 51311052013517. The reversal of 51311052013501 is 10531025011315.

It is a cyclic number.

It is not a de Polignac number, because 51311052013501 - 2³ = 51311052013493 is a prime.

It is a super-3 number, since 3×51311052013501³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51311052013501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51311052013201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 713618650 + ... + 713690548.

It is an arithmetic number, because the mean of its divisors is an integer number (1857028167000).

Almost surely, 2^{51311052013501} is an apocalyptic number.

It is an amenable number.

51311052013501 is a deficient number, since it is larger than the sum of its proper divisors (8113849330499).

51311052013501 is a wasteful number, since it uses less digits than its factorization.

51311052013501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74389.

The product of its (nonzero) digits is 2250, while the sum is 28.

Adding to 51311052013501 its reverse (10531025011315), we get a palindrome (61842077024816).

The spelling of 51311052013501 in words is "fifty-one trillion, three hundred eleven billion, fifty-two million, thirteen thousand, five hundred one".