2500161 has 8 divisors (see below), whose sum is σ = 3341184. Its totient is φ = 1662960.

The previous prime is 2500159. The next prime is 2500163. The reversal of 2500161 is 1610052.

It is an interprime number because it is at equal distance from previous prime (2500159) and next prime (2500163).

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

It is not a de Polignac number, because 2500161 - 2¹ = 2500159 is a prime.

2500161 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2500161.

It is not an unprimeable number, because it can be changed into a prime (2500163) 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, 1416 + ... + 2646.

It is an arithmetic number, because the mean of its divisors is an integer number (417648).

2^2500161 is an apocalyptic number.

It is an amenable number.

2500161 is a deficient number, since it is larger than the sum of its proper divisors (841023).

2500161 is a wasteful number, since it uses less digits than its factorization.

2500161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 2500161 is about 1581.1897419349. The cubic root of 2500161 is about 135.7237942421.

The spelling of 2500161 in words is "two million, five hundred thousand, one hundred sixty-one".