253542819 has 4 divisors (see below), whose sum is σ = 338057096. Its totient is φ = 169028544.

The previous prime is 253542803. The next prime is 253542827. The reversal of 253542819 is 918245352.

253542819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 253542819 - 2⁴ = 253542803 is a prime.

It is a super-2 number, since 2×253542819² = 128567922132933522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253542889) 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, 42257134 + ... + 42257139.

It is an arithmetic number, because the mean of its divisors is an integer number (84514274).

Almost surely, 2^253542819 is an apocalyptic number.

253542819 is a deficient number, since it is larger than the sum of its proper divisors (84514277).

253542819 is an equidigital number, since it uses as much as digits as its factorization.

253542819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84514276.

The product of its digits is 86400, while the sum is 39.

The square root of 253542819 is about 15923.0279469704. The cubic root of 253542819 is about 632.9223591972.

It can be divided in two parts, 2535 and 42819, that added together give a palindrome (45354).

The spelling of 253542819 in words is "two hundred fifty-three million, five hundred forty-two thousand, eight hundred nineteen".