2506543653 has 8 divisors (see below), whose sum is σ = 3347640000. Its totient is φ = 1668238208.

The previous prime is 2506543639. The next prime is 2506543667. The reversal of 2506543653 is 3563456052.

It is an interprime number because it is at equal distance from previous prime (2506543639) and next prime (2506543667).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2506543653 - 2⁸ = 2506543397 is a prime.

It is a super-2 number, since 2×2506543653² = 12565522168789168818, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506543603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695628 + ... + 699221.

It is an arithmetic number, because the mean of its divisors is an integer number (418455000).

Almost surely, 2^2506543653 is an apocalyptic number.

It is an amenable number.

2506543653 is a deficient number, since it is larger than the sum of its proper divisors (841096347).

2506543653 is a wasteful number, since it uses less digits than its factorization.

2506543653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395451.

The product of its (nonzero) digits is 324000, while the sum is 39.

The square root of 2506543653 is about 50065.3937665530. The cubic root of 2506543653 is about 1358.3919237761.

The spelling of 2506543653 in words is "two billion, five hundred six million, five hundred forty-three thousand, six hundred fifty-three".