2545601 has 4 divisors (see below), whose sum is σ = 2679600. Its totient is φ = 2411604.

The previous prime is 2545573. The next prime is 2545603. The reversal of 2545601 is 1065452.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2545601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2545603) 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, 66971 + ... + 67008.

It is an arithmetic number, because the mean of its divisors is an integer number (669900).

2^2545601 is an apocalyptic number.

It is an amenable number.

2545601 is a deficient number, since it is larger than the sum of its proper divisors (133999).

2545601 is a wasteful number, since it uses less digits than its factorization.

2545601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133998.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2545601 is about 1595.4939673969. The cubic root of 2545601 is about 136.5411147822.

The spelling of 2545601 in words is "two million, five hundred forty-five thousand, six hundred one".