2540945 has 8 divisors (see below), whose sum is σ = 3326400. Its totient is φ = 1847920.

The previous prime is 2540933. The next prime is 2540957. The reversal of 2540945 is 5490452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2540933) and next prime (2540957).

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

It is not a de Polignac number, because 2540945 - 2⁸ = 2540689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23045 + ... + 23154.

It is an arithmetic number, because the mean of its divisors is an integer number (415800).

2^2540945 is an apocalyptic number.

It is an amenable number.

2540945 is a deficient number, since it is larger than the sum of its proper divisors (785455).

2540945 is a wasteful number, since it uses less digits than its factorization.

2540945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46215.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2540945 is about 1594.0341903485. The cubic root of 2540945 is about 136.4578176984.

The spelling of 2540945 in words is "two million, five hundred forty thousand, nine hundred forty-five".