16401497 has 16 divisors (see below), whose sum is σ = 19355904. Its totient is φ = 13608000.

The previous prime is 16401493. The next prime is 16401499. The reversal of 16401497 is 79410461.

16401497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16401497 - 2² = 16401493 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16401493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30047 + ... + 30587.

It is an arithmetic number, because the mean of its divisors is an integer number (1209744).

Almost surely, 2^16401497 is an apocalyptic number.

It is an amenable number.

16401497 is a deficient number, since it is larger than the sum of its proper divisors (2954407).

16401497 is an equidigital number, since it uses as much as digits as its factorization.

16401497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 16401497 is about 4049.8761709465. The cubic root of 16401497 is about 254.0745487670.

The spelling of 16401497 in words is "sixteen million, four hundred one thousand, four hundred ninety-seven".