2571552021 has 32 divisors (see below), whose sum is σ = 3642863616. Its totient is φ = 1610928000.

The previous prime is 2571552013. The next prime is 2571552029. The reversal of 2571552021 is 1202551752.

It is an interprime number because it is at equal distance from previous prime (2571552013) and next prime (2571552029).

It is not a de Polignac number, because 2571552021 - 2³ = 2571552013 is a prime.

It is a super-2 number, since 2×2571552021² = 13225759593418368882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2571552021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2571552029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 864066 + ... + 867036.

It is an arithmetic number, because the mean of its divisors is an integer number (113839488).

Almost surely, 2^2571552021 is an apocalyptic number.

It is an amenable number.

2571552021 is a deficient number, since it is larger than the sum of its proper divisors (1071311595).

2571552021 is a wasteful number, since it uses less digits than its factorization.

2571552021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273.

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 2571552021 is about 50710.4724982917. The cubic root of 2571552021 is about 1370.0353447823.

The spelling of 2571552021 in words is "two billion, five hundred seventy-one million, five hundred fifty-two thousand, twenty-one".