157066165 has 4 divisors (see below), whose sum is σ = 188479404. Its totient is φ = 125652928.

The previous prime is 157066109. The next prime is 157066171. The reversal of 157066165 is 561660751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115412049 + 41654116 = 10743^2 + 6454^2 .

It is a cyclic number.

It is not a de Polignac number, because 157066165 - 2²¹ = 154969013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15706612 + ... + 15706621.

It is an arithmetic number, because the mean of its divisors is an integer number (47119851).

Almost surely, 2^157066165 is an apocalyptic number.

It is an amenable number.

157066165 is a deficient number, since it is larger than the sum of its proper divisors (31413239).

157066165 is an equidigital number, since it uses as much as digits as its factorization.

157066165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31413238.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 157066165 is about 12532.6040789614. The cubic root of 157066165 is about 539.5448439457.

The spelling of 157066165 in words is "one hundred fifty-seven million, sixty-six thousand, one hundred sixty-five".