51579959 has 2 divisors, whose sum is σ = 51579960. Its totient is φ = 51579958.

The previous prime is 51579947. The next prime is 51579967. The reversal of 51579959 is 95997515.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51579959 - 2¹⁶ = 51514423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51579929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25789979 + 25789980.

It is an arithmetic number, because the mean of its divisors is an integer number (25789980).

Almost surely, 2^51579959 is an apocalyptic number.

51579959 is a deficient number, since it is larger than the sum of its proper divisors (1).

51579959 is an equidigital number, since it uses as much as digits as its factorization.

51579959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 637875, while the sum is 50.

The square root of 51579959 is about 7181.9188940004. The cubic root of 51579959 is about 372.2433924776.

The spelling of 51579959 in words is "fifty-one million, five hundred seventy-nine thousand, nine hundred fifty-nine".