2457161 has 4 divisors (see below), whose sum is σ = 2808192. Its totient is φ = 2106132.

The previous prime is 2457139. The next prime is 2457179. The reversal of 2457161 is 1617542.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1617542 = 2 ⋅808771.

It is a de Polignac number, because none of the positive numbers 2^k-2457161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2457161.

It is not an unprimeable number, because it can be changed into a prime (2457121) 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, 175505 + ... + 175518.

It is an arithmetic number, because the mean of its divisors is an integer number (702048).

2^2457161 is an apocalyptic number.

It is an amenable number.

2457161 is a deficient number, since it is larger than the sum of its proper divisors (351031).

2457161 is an equidigital number, since it uses as much as digits as its factorization.

2457161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351030.

The product of its digits is 1680, while the sum is 26.

The square root of 2457161 is about 1567.5334127220. The cubic root of 2457161 is about 134.9411906629.

The spelling of 2457161 in words is "two million, four hundred fifty-seven thousand, one hundred sixty-one".