2545591 has 8 divisors (see below), whose sum is σ = 2678400. Its totient is φ = 2415840.

The previous prime is 2545573. The next prime is 2545603. The reversal of 2545591 is 1955452.

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

It is a cyclic number.

It is not a de Polignac number, because 2545591 - 2⁹ = 2545079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050 + ... + 2488.

It is an arithmetic number, because the mean of its divisors is an integer number (334800).

2^2545591 is an apocalyptic number.

2545591 is a deficient number, since it is larger than the sum of its proper divisors (132809).

2545591 is a wasteful number, since it uses less digits than its factorization.

2545591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529.

The product of its digits is 9000, while the sum is 31.

The square root of 2545591 is about 1595.4908335682. The cubic root of 2545591 is about 136.5409359884.

It can be divided in two parts, 2545 and 591, that added together give a square (3136 = 56²).

The spelling of 2545591 in words is "two million, five hundred forty-five thousand, five hundred ninety-one".