51417352253 has 4 divisors (see below), whose sum is σ = 52807010460. Its totient is φ = 50027694048.

The previous prime is 51417352229. The next prime is 51417352267. The reversal of 51417352253 is 35225371415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48700545124 + 2716807129 = 220682^2 + 52123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51417352253 is a prime.

It is a super-2 number, since 2×51417352253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51417952253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694829048 + ... + 694829121.

It is an arithmetic number, because the mean of its divisors is an integer number (13201752615).

Almost surely, 2^51417352253 is an apocalyptic number.

It is an amenable number.

51417352253 is a deficient number, since it is larger than the sum of its proper divisors (1389658207).

51417352253 is a wasteful number, since it uses less digits than its factorization.

51417352253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389658206.

The product of its digits is 126000, while the sum is 38.

The spelling of 51417352253 in words is "fifty-one billion, four hundred seventeen million, three hundred fifty-two thousand, two hundred fifty-three".