16503157 has 16 divisors (see below), whose sum is σ = 18600192. Its totient is φ = 14513920.

The previous prime is 16503143. The next prime is 16503161. The reversal of 16503157 is 75130561.

It is a cyclic number.

It is not a de Polignac number, because 16503157 - 2¹¹ = 16501109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16504157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70713 + ... + 70945.

It is an arithmetic number, because the mean of its divisors is an integer number (1162512).

Almost surely, 2^16503157 is an apocalyptic number.

It is an amenable number.

16503157 is a deficient number, since it is larger than the sum of its proper divisors (2097035).

16503157 is a wasteful number, since it uses less digits than its factorization.

16503157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 16503157 is about 4062.4077835688. The cubic root of 16503157 is about 254.5984041325.

The spelling of 16503157 in words is "sixteen million, five hundred three thousand, one hundred fifty-seven".