16557572 has 12 divisors (see below), whose sum is σ = 29057280. Its totient is φ = 8255496.

The previous prime is 16557533. The next prime is 16557577. The reversal of 16557572 is 27575561.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16557577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4172 + ... + 7107.

It is an arithmetic number, because the mean of its divisors is an integer number (2421440).

Almost surely, 2^16557572 is an apocalyptic number.

It is an amenable number.

16557572 is a deficient number, since it is larger than the sum of its proper divisors (12499708).

16557572 is a wasteful number, since it uses less digits than its factorization.

16557572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11650 (or 11648 counting only the distinct ones).

The product of its digits is 73500, while the sum is 38.

The square root of 16557572 is about 4069.0996547148. The cubic root of 16557572 is about 254.8779218299.

The spelling of 16557572 in words is "sixteen million, five hundred fifty-seven thousand, five hundred seventy-two".