659450557 has 2 divisors, whose sum is σ = 659450558. Its totient is φ = 659450556.

The previous prime is 659450551. The next prime is 659450563. The reversal of 659450557 is 755054956.

It is a balanced prime because it is at equal distance from previous prime (659450551) and next prime (659450563).

It can be written as a sum of positive squares in only one way, i.e., 483384196 + 176066361 = 21986^2 + 13269^2 .

It is a cyclic number.

It is not a de Polignac number, because 659450557 - 2¹¹ = 659448509 is a prime.

It is a super-2 number, since 2×659450557² = 869750074255220498, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659450551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329725278 + 329725279.

It is an arithmetic number, because the mean of its divisors is an integer number (329725279).

Almost surely, 2^659450557 is an apocalyptic number.

It is an amenable number.

659450557 is a deficient number, since it is larger than the sum of its proper divisors (1).

659450557 is an equidigital number, since it uses as much as digits as its factorization.

659450557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 945000, while the sum is 46.

The square root of 659450557 is about 25679.7694109585. The cubic root of 659450557 is about 870.4170973115.

The spelling of 659450557 in words is "six hundred fifty-nine million, four hundred fifty thousand, five hundred fifty-seven".