2545145503 has 4 divisors (see below), whose sum is σ = 2550666888. Its totient is φ = 2539624120.

The previous prime is 2545145459. The next prime is 2545145507. The reversal of 2545145503 is 3055415452.

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 2545145503 - 2²⁹ = 2008274591 is a prime.

It is a super-2 number, since 2×2545145503² = 12955531262882246018, 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 (2545145507) 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, 2760001 + ... + 2760922.

It is an arithmetic number, because the mean of its divisors is an integer number (637666722).

Almost surely, 2^2545145503 is an apocalyptic number.

2545145503 is a deficient number, since it is larger than the sum of its proper divisors (5521385).

2545145503 is an equidigital number, since it uses as much as digits as its factorization.

2545145503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521384.

The product of its (nonzero) digits is 60000, while the sum is 34.

The square root of 2545145503 is about 50449.4351108117. The cubic root of 2545145503 is about 1365.3297030366.

The spelling of 2545145503 in words is "two billion, five hundred forty-five million, one hundred forty-five thousand, five hundred three".