51457452269 has 8 divisors (see below), whose sum is σ = 55096546680. Its totient is φ = 47886378496.

The previous prime is 51457452253. The next prime is 51457452289. The reversal of 51457452269 is 96225475415.

It can be written as a sum of positive squares in 4 ways, for example, as 1974025 + 51455478244 = 1405^2 + 226838^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51457452269 - 2⁴ = 51457452253 is a prime.

It is a super-2 number, since 2×51457452269² (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 (51457452229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17003594 + ... + 17006619.

It is an arithmetic number, because the mean of its divisors is an integer number (6887068335).

Almost surely, 2^51457452269 is an apocalyptic number.

It is an amenable number.

51457452269 is a deficient number, since it is larger than the sum of its proper divisors (3639094411).

51457452269 is a wasteful number, since it uses less digits than its factorization.

51457452269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34010319.

The product of its digits is 3024000, while the sum is 50.

The spelling of 51457452269 in words is "fifty-one billion, four hundred fifty-seven million, four hundred fifty-two thousand, two hundred sixty-nine".