2545161 has 4 divisors (see below), whose sum is σ = 3393552. Its totient is φ = 1696772.

The previous prime is 2545159. The next prime is 2545163. The reversal of 2545161 is 1615452.

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 an interprime number because it is at equal distance from previous prime (2545159) and next prime (2545163).

It is a cyclic number.

It is not a de Polignac number, because 2545161 - 2¹ = 2545159 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2545163) 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, 424191 + ... + 424196.

It is an arithmetic number, because the mean of its divisors is an integer number (848388).

2^2545161 is an apocalyptic number.

It is an amenable number.

2545161 is a deficient number, since it is larger than the sum of its proper divisors (848391).

2545161 is an equidigital number, since it uses as much as digits as its factorization.

2545161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848390.

The product of its digits is 1200, while the sum is 24.

The square root of 2545161 is about 1595.3560731072. The cubic root of 2545161 is about 136.5332474125.

The spelling of 2545161 in words is "two million, five hundred forty-five thousand, one hundred sixty-one".