259442551 has 2 divisors, whose sum is σ = 259442552. Its totient is φ = 259442550.

The previous prime is 259442543. The next prime is 259442567. The reversal of 259442551 is 155244952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259442551 - 2³ = 259442543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 259442551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259442251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129721275 + 129721276.

It is an arithmetic number, because the mean of its divisors is an integer number (129721276).

Almost surely, 2^259442551 is an apocalyptic number.

259442551 is a deficient number, since it is larger than the sum of its proper divisors (1).

259442551 is an equidigital number, since it uses as much as digits as its factorization.

259442551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 37.

The square root of 259442551 is about 16107.2204616439. The cubic root of 259442551 is about 637.7939598295.

The spelling of 259442551 in words is "two hundred fifty-nine million, four hundred forty-two thousand, five hundred fifty-one".