255651543 has 48 divisors (see below), whose sum is σ = 433804800. Its totient is φ = 142067520.

The previous prime is 255651533. The next prime is 255651553. The reversal of 255651543 is 345156552.

255651543 is a `hidden beast` number, since 2 + 55 + 65 + 1 + 543 = 666.

It is an interprime number because it is at equal distance from previous prime (255651533) and next prime (255651553).

It is not a de Polignac number, because 255651543 - 2⁴ = 255651527 is a prime.

It is a super-2 number, since 2×255651543² = 130715422876561698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255651498 and 255651507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255651533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 404838 + ... + 405468.

It is an arithmetic number, because the mean of its divisors is an integer number (9037600).

Almost surely, 2^255651543 is an apocalyptic number.

255651543 is a deficient number, since it is larger than the sum of its proper divisors (178153257).

255651543 is a wasteful number, since it uses less digits than its factorization.

255651543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 809 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 255651543 is about 15989.1070107120. The cubic root of 255651543 is about 634.6721956990.

The spelling of 255651543 in words is "two hundred fifty-five million, six hundred fifty-one thousand, five hundred forty-three".