16412557 has 4 divisors (see below), whose sum is σ = 18757216. Its totient is φ = 14067900.

The previous prime is 16412533. The next prime is 16412567. The reversal of 16412557 is 75521461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-16412557 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 (16412507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172319 + ... + 1172332.

It is an arithmetic number, because the mean of its divisors is an integer number (4689304).

Almost surely, 2^16412557 is an apocalyptic number.

It is an amenable number.

16412557 is a deficient number, since it is larger than the sum of its proper divisors (2344659).

16412557 is an equidigital number, since it uses as much as digits as its factorization.

16412557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344658.

The product of its digits is 8400, while the sum is 31.

The square root of 16412557 is about 4051.2414146777. The cubic root of 16412557 is about 254.1316458541.

It can be divided in two parts, 164 and 12557, that added together give a palindrome (12721).

The spelling of 16412557 in words is "sixteen million, four hundred twelve thousand, five hundred fifty-seven".