157166503 has 8 divisors (see below), whose sum is σ = 169696800. Its totient is φ = 144699168.

The previous prime is 157166483. The next prime is 157166519. The reversal of 157166503 is 305661751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157166503 - 2⁹ = 157165991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157166533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10483 + ... + 20596.

It is an arithmetic number, because the mean of its divisors is an integer number (21212100).

Almost surely, 2^157166503 is an apocalyptic number.

157166503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

157166503 is a deficient number, since it is larger than the sum of its proper divisors (12530297).

157166503 is a wasteful number, since it uses less digits than its factorization.

157166503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31481.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 157166503 is about 12536.6065185121. The cubic root of 157166503 is about 539.6597113046.

The spelling of 157166503 in words is "one hundred fifty-seven million, one hundred sixty-six thousand, five hundred three".