15650161 has 4 divisors (see below), whose sum is σ = 15788772. Its totient is φ = 15511552.

The previous prime is 15650123. The next prime is 15650179. The reversal of 15650161 is 16105651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16105651 = 79 ⋅203869.

It can be written as a sum of positive squares in 2 ways, for example, as 291600 + 15358561 = 540^2 + 3919^2 .

It is a cyclic number.

It is not a de Polignac number, because 15650161 - 2⁹ = 15649649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15650461) 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, 69136 + ... + 69361.

It is an arithmetic number, because the mean of its divisors is an integer number (3947193).

Almost surely, 2^15650161 is an apocalyptic number.

It is an amenable number.

15650161 is a deficient number, since it is larger than the sum of its proper divisors (138611).

15650161 is a wasteful number, since it uses less digits than its factorization.

15650161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138610.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 15650161 is about 3956.0284377138. The cubic root of 15650161 is about 250.1341200344.

The spelling of 15650161 in words is "fifteen million, six hundred fifty thousand, one hundred sixty-one".