259964557 has 2 divisors, whose sum is σ = 259964558. Its totient is φ = 259964556.

The previous prime is 259964533. The next prime is 259964581. The reversal of 259964557 is 755469952.

It is a balanced prime because it is at equal distance from previous prime (259964533) and next prime (259964581).

It can be written as a sum of positive squares in only one way, i.e., 240064036 + 19900521 = 15494^2 + 4461^2 .

It is a cyclic number.

It is not a de Polignac number, because 259964557 - 2²³ = 251575949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259964597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129982278 + 129982279.

It is an arithmetic number, because the mean of its divisors is an integer number (129982279).

Almost surely, 2^259964557 is an apocalyptic number.

It is an amenable number.

259964557 is a deficient number, since it is larger than the sum of its proper divisors (1).

259964557 is an equidigital number, since it uses as much as digits as its factorization.

259964557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402000, while the sum is 52.

The square root of 259964557 is about 16123.4164183649. The cubic root of 259964557 is about 638.2214266322.

The spelling of 259964557 in words is "two hundred fifty-nine million, nine hundred sixty-four thousand, five hundred fifty-seven".