16153997 has 4 divisors (see below), whose sum is σ = 16189056. Its totient is φ = 16118940.

The previous prime is 16153993. The next prime is 16154011. The reversal of 16153997 is 79935161.

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 16153997 - 2² = 16153993 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 (16153993) 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, 16829 + ... + 17762.

It is an arithmetic number, because the mean of its divisors is an integer number (4047264).

Almost surely, 2^16153997 is an apocalyptic number.

It is an amenable number.

16153997 is a deficient number, since it is larger than the sum of its proper divisors (35059).

16153997 is an equidigital number, since it uses as much as digits as its factorization.

16153997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35058.

The product of its digits is 51030, while the sum is 41.

The square root of 16153997 is about 4019.2035280637. The cubic root of 16153997 is about 252.7900636767.

The spelling of 16153997 in words is "sixteen million, one hundred fifty-three thousand, nine hundred ninety-seven".