16155401 has 4 divisors (see below), whose sum is σ = 16531152. Its totient is φ = 15779652.

The previous prime is 16155397. The next prime is 16155409. The reversal of 16155401 is 10455161.

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 16155401 - 2² = 16155397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16155409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187811 + ... + 187896.

It is an arithmetic number, because the mean of its divisors is an integer number (4132788).

Almost surely, 2^16155401 is an apocalyptic number.

It is an amenable number.

16155401 is a deficient number, since it is larger than the sum of its proper divisors (375751).

16155401 is an equidigital number, since it uses as much as digits as its factorization.

16155401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375750.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 16155401 is about 4019.3781857397. The cubic root of 16155401 is about 252.7973870854.

The spelling of 16155401 in words is "sixteen million, one hundred fifty-five thousand, four hundred one".