157590166 has 4 divisors (see below), whose sum is σ = 236385252. Its totient is φ = 78795082.

The previous prime is 157590157. The next prime is 157590197. The reversal of 157590166 is 661095751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661095751 = 313 ⋅2112127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39397540 + ... + 39397543.

It is an arithmetic number, because the mean of its divisors is an integer number (59096313).

Almost surely, 2^157590166 is an apocalyptic number.

157590166 is a deficient number, since it is larger than the sum of its proper divisors (78795086).

157590166 is an equidigital number, since it uses as much as digits as its factorization.

157590166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78795085.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 157590166 is about 12553.4921834524. The cubic root of 157590166 is about 540.1441841778.

The spelling of 157590166 in words is "one hundred fifty-seven million, five hundred ninety thousand, one hundred sixty-six".