51513101 has 2 divisors, whose sum is σ = 51513102. Its totient is φ = 51513100.

The previous prime is 51513089. The next prime is 51513109. The reversal of 51513101 is 10131515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30261001 + 21252100 = 5501^2 + 4610^2 .

It is a cyclic number.

It is not a de Polignac number, because 51513101 - 2¹⁴ = 51496717 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51513101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51513109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25756550 + 25756551.

It is an arithmetic number, because the mean of its divisors is an integer number (25756551).

Almost surely, 2^51513101 is an apocalyptic number.

It is an amenable number.

51513101 is a deficient number, since it is larger than the sum of its proper divisors (1).

51513101 is an equidigital number, since it uses as much as digits as its factorization.

51513101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 51513101 is about 7177.2627790823. The cubic root of 51513101 is about 372.0824888371.

Adding to 51513101 its reverse (10131515), we get a palindrome (61644616).

The spelling of 51513101 in words is "fifty-one million, five hundred thirteen thousand, one hundred one".