157161206 has 4 divisors (see below), whose sum is σ = 235741812. Its totient is φ = 78580602.

The previous prime is 157161203. The next prime is 157161223. The reversal of 157161206 is 602161751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 602161751 = 1319 ⋅456529.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157161203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39290300 + ... + 39290303.

It is an arithmetic number, because the mean of its divisors is an integer number (58935453).

Almost surely, 2^157161206 is an apocalyptic number.

157161206 is a deficient number, since it is larger than the sum of its proper divisors (78580606).

157161206 is an equidigital number, since it uses as much as digits as its factorization.

157161206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78580605.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 157161206 is about 12536.3952554153. The cubic root of 157161206 is about 539.6536484995.

The spelling of 157161206 in words is "one hundred fifty-seven million, one hundred sixty-one thousand, two hundred six".