2521042545 has 32 divisors (see below), whose sum is σ = 4734505728. Its totient is φ = 1121326848.

The previous prime is 2521042507. The next prime is 2521042547. The reversal of 2521042545 is 5452401252.

It is not a de Polignac number, because 2521042545 - 2⁹ = 2521042033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2521042547) 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 31 ways as a sum of consecutive naturals, for example, 320574 + ... + 328343.

It is an arithmetic number, because the mean of its divisors is an integer number (147953304).

Almost surely, 2^2521042545 is an apocalyptic number.

It is an amenable number.

2521042545 is a deficient number, since it is larger than the sum of its proper divisors (2213463183).

2521042545 is a wasteful number, since it uses less digits than its factorization.

2521042545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648969.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 2521042545 is about 50209.9845150345. The cubic root of 2521042545 is about 1361.0060579583.

Adding to 2521042545 its reverse (5452401252), we get a palindrome (7973443797).

The spelling of 2521042545 in words is "two billion, five hundred twenty-one million, forty-two thousand, five hundred forty-five".