253992543 has 16 divisors (see below), whose sum is σ = 387452160. Its totient is φ = 144982656.

The previous prime is 253992539. The next prime is 253992547. The reversal of 253992543 is 345299352.

It is an interprime number because it is at equal distance from previous prime (253992539) and next prime (253992547).

It is not a de Polignac number, because 253992543 - 2² = 253992539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253992495 and 253992504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253992547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15196 + ... + 27182.

It is an arithmetic number, because the mean of its divisors is an integer number (24215760).

Almost surely, 2^253992543 is an apocalyptic number.

253992543 is a deficient number, since it is larger than the sum of its proper divisors (133459617).

253992543 is a wasteful number, since it uses less digits than its factorization.

253992543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13006.

The product of its digits is 291600, while the sum is 42.

The square root of 253992543 is about 15937.1435018952. The cubic root of 253992543 is about 633.2963555203.

The spelling of 253992543 in words is "two hundred fifty-three million, nine hundred ninety-two thousand, five hundred forty-three".