51755659 has 2 divisors, whose sum is σ = 51755660. Its totient is φ = 51755658.

The previous prime is 51755657. The next prime is 51755731. The reversal of 51755659 is 95655715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51755659 - 2¹ = 51755657 is a prime.

Together with 51755657, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51755657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25877829 + 25877830.

It is an arithmetic number, because the mean of its divisors is an integer number (25877830).

Almost surely, 2^51755659 is an apocalyptic number.

51755659 is a deficient number, since it is larger than the sum of its proper divisors (1).

51755659 is an equidigital number, since it uses as much as digits as its factorization.

51755659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236250, while the sum is 43.

The square root of 51755659 is about 7194.1406019065. The cubic root of 51755659 is about 372.6655786862.

The spelling of 51755659 in words is "fifty-one million, seven hundred fifty-five thousand, six hundred fifty-nine".