2545642 has 16 divisors (see below), whose sum is σ = 4191264. Its totient is φ = 1150000.

The previous prime is 2545633. The next prime is 2545651. The reversal of 2545642 is 2465452.

It is an interprime number because it is at equal distance from previous prime (2545633) and next prime (2545651).

It is a d-powerful number, because it can be written as 2¹¹ + 5⁵ + 4² + 5⁹ + 6⁶ + 4⁷ + 2¹⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2545642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5292 + ... + 5752.

It is an arithmetic number, because the mean of its divisors is an integer number (261954).

2^2545642 is an apocalyptic number.

2545642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2545642 is a deficient number, since it is larger than the sum of its proper divisors (1645622).

2545642 is a wasteful number, since it uses less digits than its factorization.

2545642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725.

The product of its digits is 9600, while the sum is 28.

The square root of 2545642 is about 1595.5068160306. The cubic root of 2545642 is about 136.5418478318.

The spelling of 2545642 in words is "two million, five hundred forty-five thousand, six hundred forty-two".