2642571 has 16 divisors (see below), whose sum is σ = 3959200. Its totient is φ = 1741824.

The previous prime is 2642569. The next prime is 2642587. The reversal of 2642571 is 1752462.

It is not a de Polignac number, because 2642571 - 2¹ = 2642569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

2642571 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2642561) 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, 2115 + ... + 3123.

It is an arithmetic number, because the mean of its divisors is an integer number (247450).

2^2642571 is an apocalyptic number.

2642571 is a deficient number, since it is larger than the sum of its proper divisors (1316629).

2642571 is a wasteful number, since it uses less digits than its factorization.

2642571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1109 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2642571 is about 1625.5986589561. The cubic root of 2642571 is about 138.2533154431.

The spelling of 2642571 in words is "two million, six hundred forty-two thousand, five hundred seventy-one".