51417952253 has 2 divisors, whose sum is σ = 51417952254. Its totient is φ = 51417952252.

The previous prime is 51417952249. The next prime is 51417952301. The reversal of 51417952253 is 35225971415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41301213529 + 10116738724 = 203227^2 + 100582^2 .

It is a cyclic number.

It is not a de Polignac number, because 51417952253 - 2² = 51417952249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51417952153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25708976126 + 25708976127.

It is an arithmetic number, because the mean of its divisors is an integer number (25708976127).

Almost surely, 2^51417952253 is an apocalyptic number.

It is an amenable number.

51417952253 is a deficient number, since it is larger than the sum of its proper divisors (1).

51417952253 is an equidigital number, since it uses as much as digits as its factorization.

51417952253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 44.

The spelling of 51417952253 in words is "fifty-one billion, four hundred seventeen million, nine hundred fifty-two thousand, two hundred fifty-three".