2645252571 has 16 divisors (see below), whose sum is σ = 3840994080. Its totient is φ = 1609555200.

The previous prime is 2645252569. The next prime is 2645252573. The reversal of 2645252571 is 1752525462.

It is an interprime number because it is at equal distance from previous prime (2645252569) and next prime (2645252573).

It is not a de Polignac number, because 2645252571 - 2¹ = 2645252569 is a prime.

It is a super-2 number, since 2×2645252571² = 13994722328764220082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2645252573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377580 + ... + 384521.

It is an arithmetic number, because the mean of its divisors is an integer number (240062130).

Almost surely, 2^2645252571 is an apocalyptic number.

2645252571 is a deficient number, since it is larger than the sum of its proper divisors (1195741509).

2645252571 is a wasteful number, since it uses less digits than its factorization.

2645252571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762206.

The product of its digits is 168000, while the sum is 39.

The square root of 2645252571 is about 51432.0189279013. The cubic root of 2645252571 is about 1383.0006420278. Note that the first 3 decimals are identical.

The spelling of 2645252571 in words is "two billion, six hundred forty-five million, two hundred fifty-two thousand, five hundred seventy-one".