16252517 has 4 divisors (see below), whose sum is σ = 16278060. Its totient is φ = 16226976.

The previous prime is 16252507. The next prime is 16252531. The reversal of 16252517 is 71525261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1267876 + 14984641 = 1126^2 + 3871^2 .

It is a cyclic number.

It is not a de Polignac number, because 16252517 - 2⁸ = 16252261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16252517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16252507) 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, 11792 + ... + 13097.

It is an arithmetic number, because the mean of its divisors is an integer number (4069515).

Almost surely, 2^16252517 is an apocalyptic number.

It is an amenable number.

16252517 is a deficient number, since it is larger than the sum of its proper divisors (25543).

16252517 is an equidigital number, since it uses as much as digits as its factorization.

16252517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25542.

The product of its digits is 4200, while the sum is 29.

The square root of 16252517 is about 4031.4410574880. The cubic root of 16252517 is about 253.3029278297.

Adding to 16252517 its reverse (71525261), we get a palindrome (87777778).

The spelling of 16252517 in words is "sixteen million, two hundred fifty-two thousand, five hundred seventeen".