16572257 has 8 divisors (see below), whose sum is σ = 17908800. Its totient is φ = 15244560.

The previous prime is 16572233. The next prime is 16572277. The reversal of 16572257 is 75227561.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16572257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16572277) 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, 1994 + ... + 6092.

It is an arithmetic number, because the mean of its divisors is an integer number (2238600).

Almost surely, 2^16572257 is an apocalyptic number.

It is an amenable number.

16572257 is a deficient number, since it is larger than the sum of its proper divisors (1336543).

16572257 is a wasteful number, since it uses less digits than its factorization.

16572257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423.

The product of its digits is 29400, while the sum is 35.

The square root of 16572257 is about 4070.9037080236. The cubic root of 16572257 is about 254.9532504328.

The spelling of 16572257 in words is "sixteen million, five hundred seventy-two thousand, two hundred fifty-seven".