16157223 has 6 divisors (see below), whose sum is σ = 23338224. Its totient is φ = 10771476.

The previous prime is 16157213. The next prime is 16157227. The reversal of 16157223 is 32275161.

It is a happy number.

It is not a de Polignac number, because 16157223 - 2⁸ = 16156967 is a prime.

It is a super-2 number, since 2×16157223² = 522111710143458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16157227) 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 5 ways as a sum of consecutive naturals, for example, 897615 + ... + 897632.

It is an arithmetic number, because the mean of its divisors is an integer number (3889704).

Almost surely, 2^16157223 is an apocalyptic number.

16157223 is a deficient number, since it is larger than the sum of its proper divisors (7181001).

16157223 is a wasteful number, since it uses less digits than its factorization.

16157223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795253 (or 1795250 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 16157223 is about 4019.6048313236. The cubic root of 16157223 is about 252.8068901927.

The spelling of 16157223 in words is "sixteen million, one hundred fifty-seven thousand, two hundred twenty-three".