157603209 has 16 divisors (see below), whose sum is σ = 224547840. Its totient is φ = 97977600.

The previous prime is 157603177. The next prime is 157603211. The reversal of 157603209 is 902306751.

It is not a de Polignac number, because 157603209 - 2⁵ = 157603177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157603209.

It is not an unprimeable number, because it can be changed into a prime (157603249) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 8617 + ... + 19734.

It is an arithmetic number, because the mean of its divisors is an integer number (14034240).

Almost surely, 2^157603209 is an apocalyptic number.

It is an amenable number.

157603209 is a deficient number, since it is larger than the sum of its proper divisors (66944631).

157603209 is a wasteful number, since it uses less digits than its factorization.

157603209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28480.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 157603209 is about 12554.0116695820. The cubic root of 157603209 is about 540.1590855015.

The spelling of 157603209 in words is "one hundred fifty-seven million, six hundred three thousand, two hundred nine".