2545511 has 4 divisors (see below), whose sum is σ = 2550024. Its totient is φ = 2541000.

The previous prime is 2545493. The next prime is 2545513. The reversal of 2545511 is 1155452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2545511 - 2⁶ = 2545447 is a prime.

It is a super-2 number, since 2×2545511² = 12959252502242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545513) 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, 1265 + ... + 2586.

It is an arithmetic number, because the mean of its divisors is an integer number (637506).

2^2545511 is an apocalyptic number.

2545511 is a deficient number, since it is larger than the sum of its proper divisors (4513).

2545511 is an equidigital number, since it uses as much as digits as its factorization.

2545511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512.

The product of its digits is 1000, while the sum is 23.

The square root of 2545511 is about 1595.4657627163. The cubic root of 2545511 is about 136.5395056212.

The spelling of 2545511 in words is "two million, five hundred forty-five thousand, five hundred eleven".