51474080641 has 9 divisors (see below), whose sum is σ = 54330380163. Its totient is φ = 48760834680.

The previous prime is 51474080617. The next prime is 51474080681. The reversal of 51474080641 is 14608047415.

The square root of 51474080641 is 226879.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13472477041 + 38001603600 = 116071^2 + 194940^2 .

It is not a de Polignac number, because 51474080641 - 2²¹ = 51471983489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51474080594 and 51474080603.

It is not an unprimeable number, because it can be changed into a prime (51474080611) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4304731 + ... + 4316671.

It is an arithmetic number, because the mean of its divisors is an integer number (6036708907).

Almost surely, 2^51474080641 is an apocalyptic number.

51474080641 is the 226879-th square number.

51474080641 is the 113440-th centered octagonal number.

It is an amenable number.

51474080641 is a deficient number, since it is larger than the sum of its proper divisors (2856299522).

51474080641 is an frugal number, since it uses more digits than its factorization.

51474080641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23920 (or 11960 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 51474080641 in words is "fifty-one billion, four hundred seventy-four million, eighty thousand, six hundred forty-one".