51226452436 has 12 divisors (see below), whose sum is σ = 89651216340. Its totient is φ = 25611819200.

The previous prime is 51226452323. The next prime is 51226452457. The reversal of 51226452436 is 63425462215.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24052908100 + 27173544336 = 155090^2 + 164844^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267601 + ... + 417208.

It is an arithmetic number, because the mean of its divisors is an integer number (7470934695).

Almost surely, 2^51226452436 is an apocalyptic number.

It is an amenable number.

51226452436 is a deficient number, since it is larger than the sum of its proper divisors (38424763904).

51226452436 is a wasteful number, since it uses less digits than its factorization.

51226452436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703514 (or 703512 counting only the distinct ones).

The product of its digits is 345600, while the sum is 40.

The spelling of 51226452436 in words is "fifty-one billion, two hundred twenty-six million, four hundred fifty-two thousand, four hundred thirty-six".