2642251 has 4 divisors (see below), whose sum is σ = 2661400. Its totient is φ = 2623104.

The previous prime is 2642239. The next prime is 2642257. The reversal of 2642251 is 1522462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2642251 - 2⁹ = 2641739 is a prime.

It is the 1626-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2642257) by changing a digit.

It is a nontrivial repunit in base 1625.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9366 + ... + 9643.

It is an arithmetic number, because the mean of its divisors is an integer number (665350).

2^2642251 is an apocalyptic number.

2642251 is a deficient number, since it is larger than the sum of its proper divisors (19149).

2642251 is a wasteful number, since it uses less digits than its factorization.

2642251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19148.

The product of its digits is 960, while the sum is 22.

The square root of 2642251 is about 1625.5002306982. The cubic root of 2642251 is about 138.2477346600.

The spelling of 2642251 in words is "two million, six hundred forty-two thousand, two hundred fifty-one".