659406551 has 2 divisors, whose sum is σ = 659406552. Its totient is φ = 659406550.

The previous prime is 659406547. The next prime is 659406577. The reversal of 659406551 is 155604956.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 659406551 - 2² = 659406547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 659406499 and 659406508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659406521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329703275 + 329703276.

It is an arithmetic number, because the mean of its divisors is an integer number (329703276).

Almost surely, 2^659406551 is an apocalyptic number.

659406551 is a deficient number, since it is larger than the sum of its proper divisors (1).

659406551 is an equidigital number, since it uses as much as digits as its factorization.

659406551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 659406551 is about 25678.9125743284. The cubic root of 659406551 is about 870.3977355229.

The spelling of 659406551 in words is "six hundred fifty-nine million, four hundred six thousand, five hundred fifty-one".