51115351 has 8 divisors (see below), whose sum is σ = 58574720. Its totient is φ = 43695288.

The previous prime is 51115331. The next prime is 51115357. The reversal of 51115351 is 15351115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51115351 - 2²³ = 42726743 is a prime.

It is a super-2 number, since 2×51115351² = 5225558215706402, which contains 22 as substring.

It is the 7150-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51115357) by changing a digit.

It is a nontrivial repunit in base 7149.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6981 + ... + 12286.

It is an arithmetic number, because the mean of its divisors is an integer number (7321840).

Almost surely, 2^51115351 is an apocalyptic number.

51115351 is a deficient number, since it is larger than the sum of its proper divisors (7459369).

51115351 is a wasteful number, since it uses less digits than its factorization.

51115351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19653.

The product of its digits is 375, while the sum is 22.

The square root of 51115351 is about 7149.5000524512. The cubic root of 51115351 is about 371.1223553438.

Adding to 51115351 its reverse (15351115), we get a palindrome (66466466).

It can be divided in two parts, 5 and 1115351, that multiplied together give a palindrome (5576755).

The spelling of 51115351 in words is "fifty-one million, one hundred fifteen thousand, three hundred fifty-one".