2587021253 has 4 divisors (see below), whose sum is σ = 2591283840. Its totient is φ = 2582758668.

The previous prime is 2587021243. The next prime is 2587021259. The reversal of 2587021253 is 3521207852.

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 2587021253 - 2¹⁰ = 2587020229 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 (2587021259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2130383 + ... + 2131596.

It is an arithmetic number, because the mean of its divisors is an integer number (647820960).

Almost surely, 2^2587021253 is an apocalyptic number.

It is an amenable number.

2587021253 is a deficient number, since it is larger than the sum of its proper divisors (4262587).

2587021253 is an equidigital number, since it uses as much as digits as its factorization.

2587021253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262586.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 2587021253 is about 50862.7688294690. The cubic root of 2587021253 is about 1372.7770145888. Note that the first 3 decimals are identical.

The spelling of 2587021253 in words is "two billion, five hundred eighty-seven million, twenty-one thousand, two hundred fifty-three".