51516593 has 2 divisors, whose sum is σ = 51516594. Its totient is φ = 51516592.

The previous prime is 51516571. The next prime is 51516599. The reversal of 51516593 is 39561515.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50367409 + 1149184 = 7097^2 + 1072^2 .

It is a cyclic number.

It is not a de Polignac number, because 51516593 - 2¹⁴ = 51500209 is a prime.

It is not a weakly prime, because it can be changed into another prime (51516599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25758296 + 25758297.

It is an arithmetic number, because the mean of its divisors is an integer number (25758297).

Almost surely, 2^51516593 is an apocalyptic number.

It is an amenable number.

51516593 is a deficient number, since it is larger than the sum of its proper divisors (1).

51516593 is an equidigital number, since it uses as much as digits as its factorization.

51516593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20250, while the sum is 35.

The square root of 51516593 is about 7177.5060431880. The cubic root of 51516593 is about 372.0908962951.

The spelling of 51516593 in words is "fifty-one million, five hundred sixteen thousand, five hundred ninety-three".