51010817 has 12 divisors (see below), whose sum is σ = 60384660. Its totient is φ = 42804960.

The previous prime is 51010811. The next prime is 51010831. The reversal of 51010817 is 71801015.

It can be written as a sum of positive squares in 2 ways, for example, as 21242881 + 29767936 = 4609^2 + 5456^2 .

It is a de Polignac number, because none of the positive numbers 2^k-51010817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51010792 and 51010801.

It is not an unprimeable number, because it can be changed into a prime (51010811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14642 + ... + 17787.

It is an arithmetic number, because the mean of its divisors is an integer number (5032055).

Almost surely, 2^51010817 is an apocalyptic number.

It is an amenable number.

51010817 is a deficient number, since it is larger than the sum of its proper divisors (9373843).

51010817 is a wasteful number, since it uses less digits than its factorization.

51010817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32464 (or 32453 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 51010817 is about 7142.1857298729. The cubic root of 51010817 is about 370.8691934293.

The spelling of 51010817 in words is "fifty-one million, ten thousand, eight hundred seventeen".