157020166 has 4 divisors (see below), whose sum is σ = 235530252. Its totient is φ = 78510082.

The previous prime is 157020151. The next prime is 157020187. The reversal of 157020166 is 661020751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661020751 = 29 ⋅22793819.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39255040 + ... + 39255043.

It is an arithmetic number, because the mean of its divisors is an integer number (58882563).

Almost surely, 2^157020166 is an apocalyptic number.

157020166 is a deficient number, since it is larger than the sum of its proper divisors (78510086).

157020166 is an equidigital number, since it uses as much as digits as its factorization.

157020166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78510085.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 157020166 is about 12530.7687713085. The cubic root of 157020166 is about 539.4921677450.

It can be divided in two parts, 1570 and 20166, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 157020166 in words is "one hundred fifty-seven million, twenty thousand, one hundred sixty-six".