51616583 has 2 divisors, whose sum is σ = 51616584. Its totient is φ = 51616582.

The previous prime is 51616571. The next prime is 51616667. The reversal of 51616583 is 38561615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51616583 - 2⁴ = 51616567 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51616283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25808291 + 25808292.

It is an arithmetic number, because the mean of its divisors is an integer number (25808292).

Almost surely, 2^51616583 is an apocalyptic number.

51616583 is a deficient number, since it is larger than the sum of its proper divisors (1).

51616583 is an equidigital number, since it uses as much as digits as its factorization.

51616583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 51616583 is about 7184.4681779517. The cubic root of 51616583 is about 372.3314745988.

The spelling of 51616583 in words is "fifty-one million, six hundred sixteen thousand, five hundred eighty-three".