2521085693 has 4 divisors (see below), whose sum is σ = 2881240800. Its totient is φ = 2160930588.

The previous prime is 2521085659. The next prime is 2521085711. The reversal of 2521085693 is 3965801252.

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 not a de Polignac number, because 2521085693 - 2¹⁰ = 2521084669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2521085693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521085393) 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, 180077543 + ... + 180077556.

It is an arithmetic number, because the mean of its divisors is an integer number (720310200).

Almost surely, 2^2521085693 is an apocalyptic number.

It is an amenable number.

2521085693 is a deficient number, since it is larger than the sum of its proper divisors (360155107).

2521085693 is an equidigital number, since it uses as much as digits as its factorization.

2521085693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360155106.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 2521085693 is about 50210.4141886920. The cubic root of 2521085693 is about 1361.0138225178.

The spelling of 2521085693 in words is "two billion, five hundred twenty-one million, eighty-five thousand, six hundred ninety-three".