2640051 has 6 divisors (see below), whose sum is σ = 3813420. Its totient is φ = 1760028.

The previous prime is 2640041. The next prime is 2640059. The reversal of 2640051 is 1500462.

It is a happy number.

It is not a de Polignac number, because 2640051 - 2¹¹ = 2638003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2640059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146661 + ... + 146678.

It is an arithmetic number, because the mean of its divisors is an integer number (635570).

2^2640051 is an apocalyptic number.

2640051 is a deficient number, since it is larger than the sum of its proper divisors (1173369).

2640051 is a wasteful number, since it uses less digits than its factorization.

2640051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293345 (or 293342 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2640051 is about 1624.8233750165. The cubic root of 2640051 is about 138.2093545732.

The spelling of 2640051 in words is "two million, six hundred forty thousand, fifty-one".