51313151 has 8 divisors (see below), whose sum is σ = 53611200. Its totient is φ = 49050400.

The previous prime is 51313127. The next prime is 51313159. The reversal of 51313151 is 15131315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51313151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51313159) 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, 5831 + ... + 11688.

It is an arithmetic number, because the mean of its divisors is an integer number (6701400).

Almost surely, 2^51313151 is an apocalyptic number.

51313151 is a deficient number, since it is larger than the sum of its proper divisors (2298049).

51313151 is a wasteful number, since it uses less digits than its factorization.

51313151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17649.

The product of its digits is 225, while the sum is 20.

The square root of 51313151 is about 7163.3198309164. The cubic root of 51313151 is about 371.6004473131.

Adding to 51313151 its reverse (15131315), we get a palindrome (66444466).

The spelling of 51313151 in words is "fifty-one million, three hundred thirteen thousand, one hundred fifty-one".