16412551 has 4 divisors (see below), whose sum is σ = 16425000. Its totient is φ = 16400104.

The previous prime is 16412533. The next prime is 16412567. The reversal of 16412551 is 15521461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15521461 = 19 ⋅816919.

It is a cyclic number.

It is not a de Polignac number, because 16412551 - 2⁵ = 16412519 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 (16412651) 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, 3976 + ... + 6973.

It is an arithmetic number, because the mean of its divisors is an integer number (4106250).

Almost surely, 2^16412551 is an apocalyptic number.

16412551 is a deficient number, since it is larger than the sum of its proper divisors (12449).

16412551 is a wasteful number, since it uses less digits than its factorization.

16412551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12448.

The product of its digits is 1200, while the sum is 25.

The square root of 16412551 is about 4051.2406741639. The cubic root of 16412551 is about 254.1316148862.

The spelling of 16412551 in words is "sixteen million, four hundred twelve thousand, five hundred fifty-one".