2545901 has 4 divisors (see below), whose sum is σ = 2605152. Its totient is φ = 2486652.

The previous prime is 2545891. The next prime is 2545919. The reversal of 2545901 is 1095452.

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-2545901 is a prime.

It is a super-2 number, since 2×2545901² = 12963223803602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29561 + ... + 29646.

It is an arithmetic number, because the mean of its divisors is an integer number (651288).

2^2545901 is an apocalyptic number.

It is an amenable number.

2545901 is a deficient number, since it is larger than the sum of its proper divisors (59251).

2545901 is an equidigital number, since it uses as much as digits as its factorization.

2545901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59250.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 2545901 is about 1595.5879793982. The cubic root of 2545901 is about 136.5464783781.

The spelling of 2545901 in words is "two million, five hundred forty-five thousand, nine hundred one".