2541645 has 32 divisors (see below), whose sum is σ = 4602240. Its totient is φ = 1330560.

The previous prime is 2541613. The next prime is 2541677. The reversal of 2541645 is 5461452.

It is an interprime number because it is at equal distance from previous prime (2541613) and next prime (2541677).

It is not a de Polignac number, because 2541645 - 2⁵ = 2541613 is a prime.

It is a super-3 number, since 3×2541645³ = 49256769811085733375, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8905 + ... + 9185.

It is an arithmetic number, because the mean of its divisors is an integer number (143820).

2^2541645 is an apocalyptic number.

It is an amenable number.

2541645 is a deficient number, since it is larger than the sum of its proper divisors (2060595).

2541645 is a wasteful number, since it uses less digits than its factorization.

2541645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 356 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 2541645 is about 1594.2537439191. The cubic root of 2541645 is about 136.4703473809.

The spelling of 2541645 in words is "two million, five hundred forty-one thousand, six hundred forty-five".