16252661 has 4 divisors (see below), whose sum is σ = 16264512. Its totient is φ = 16240812.

The previous prime is 16252637. The next prime is 16252693. The reversal of 16252661 is 16625261.

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 cyclic number.

It is not a de Polignac number, because 16252661 - 2⁶ = 16252597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16252601) 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, 3551 + ... + 6716.

It is an arithmetic number, because the mean of its divisors is an integer number (4066128).

Almost surely, 2^16252661 is an apocalyptic number.

It is an amenable number.

16252661 is a deficient number, since it is larger than the sum of its proper divisors (11851).

16252661 is a wasteful number, since it uses less digits than its factorization.

16252661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11850.

The product of its digits is 4320, while the sum is 29.

The square root of 16252661 is about 4031.4589170671. The cubic root of 16252661 is about 253.3036759295.

The spelling of 16252661 in words is "sixteen million, two hundred fifty-two thousand, six hundred sixty-one".