253542999 has 4 divisors (see below), whose sum is σ = 338057336. Its totient is φ = 169028664.

The previous prime is 253542997. The next prime is 253543009. The reversal of 253542999 is 999245352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253542999 - 2¹ = 253542997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253542997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42257164 + ... + 42257169.

It is an arithmetic number, because the mean of its divisors is an integer number (84514334).

Almost surely, 2^253542999 is an apocalyptic number.

253542999 is a deficient number, since it is larger than the sum of its proper divisors (84514337).

253542999 is an equidigital number, since it uses as much as digits as its factorization.

253542999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84514336.

The product of its digits is 874800, while the sum is 48.

The square root of 253542999 is about 15923.0335991607. The cubic root of 253542999 is about 632.9225089760.

It can be divided in two parts, 253542 and 999, that added together give a triangular number (254541 = T₇₁₃).

The spelling of 253542999 in words is "two hundred fifty-three million, five hundred forty-two thousand, nine hundred ninety-nine".