165501607 has 2 divisors, whose sum is σ = 165501608. Its totient is φ = 165501606.

The previous prime is 165501599. The next prime is 165501631. The reversal of 165501607 is 706105561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165501607 - 2³ = 165501599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165501907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82750803 + 82750804.

It is an arithmetic number, because the mean of its divisors is an integer number (82750804).

Almost surely, 2^165501607 is an apocalyptic number.

165501607 is a deficient number, since it is larger than the sum of its proper divisors (1).

165501607 is an equidigital number, since it uses as much as digits as its factorization.

165501607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 165501607 is about 12864.7427879457. The cubic root of 165501607 is about 549.0358944595.

The spelling of 165501607 in words is "one hundred sixty-five million, five hundred one thousand, six hundred seven".