16157457 has 6 divisors (see below), whose sum is σ = 23338562. Its totient is φ = 10771632.

The previous prime is 16157443. The next prime is 16157461. The reversal of 16157457 is 75475161.

16157457 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15752961 + 404496 = 3969^2 + 636^2 .

It is not a de Polignac number, because 16157457 - 2⁴ = 16157441 is a prime.

It is a super-2 number, since 2×16157457² = 522126833413698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16157957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 897628 + ... + 897645.

Almost surely, 2^16157457 is an apocalyptic number.

It is an amenable number.

16157457 is a deficient number, since it is larger than the sum of its proper divisors (7181105).

16157457 is a wasteful number, since it uses less digits than its factorization.

16157457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795279 (or 1795276 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 16157457 is about 4019.6339385571. The cubic root of 16157457 is about 252.8081106278.

The spelling of 16157457 in words is "sixteen million, one hundred fifty-seven thousand, four hundred fifty-seven".