51474613 has 2 divisors, whose sum is σ = 51474614. Its totient is φ = 51474612.

The previous prime is 51474581. The next prime is 51474637. The reversal of 51474613 is 31647415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50594769 + 879844 = 7113^2 + 938^2 .

It is a cyclic number.

It is not a de Polignac number, because 51474613 - 2⁵ = 51474581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51478613) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25737306 + 25737307.

It is an arithmetic number, because the mean of its divisors is an integer number (25737307).

Almost surely, 2^51474613 is an apocalyptic number.

It is an amenable number.

51474613 is a deficient number, since it is larger than the sum of its proper divisors (1).

51474613 is an equidigital number, since it uses as much as digits as its factorization.

51474613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 51474613 is about 7174.5810330639. The cubic root of 51474613 is about 371.9897986373.

The spelling of 51474613 in words is "fifty-one million, four hundred seventy-four thousand, six hundred thirteen".