16253013 has 8 divisors (see below), whose sum is σ = 24766528. Its totient is φ = 9287424.

The previous prime is 16253009. The next prime is 16253047. The reversal of 16253013 is 31035261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16253013 - 2² = 16253009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 773953 = 16253013 / (1 + 6 + 2 + 5 + 3 + 0 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16253053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386956 + ... + 386997.

It is an arithmetic number, because the mean of its divisors is an integer number (3095816).

Almost surely, 2^16253013 is an apocalyptic number.

It is an amenable number.

16253013 is a deficient number, since it is larger than the sum of its proper divisors (8513515).

16253013 is an equidigital number, since it uses as much as digits as its factorization.

16253013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773963.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 16253013 is about 4031.5025734830. The cubic root of 16253013 is about 253.3055045993.

Adding to 16253013 its reverse (31035261), we get a palindrome (47288274).

The spelling of 16253013 in words is "sixteen million, two hundred fifty-three thousand, thirteen".