253544531 has 4 divisors (see below), whose sum is σ = 266889000. Its totient is φ = 240200064.

The previous prime is 253544521. The next prime is 253544537. The reversal of 253544531 is 135445352.

It is a happy number.

253544531 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253544531 is a prime.

It is a super-2 number, since 2×253544531² = 128569658400019922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253544537) 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, 6672206 + ... + 6672243.

It is an arithmetic number, because the mean of its divisors is an integer number (66722250).

Almost surely, 2^253544531 is an apocalyptic number.

253544531 is a deficient number, since it is larger than the sum of its proper divisors (13344469).

253544531 is a wasteful number, since it uses less digits than its factorization.

253544531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13344468.

The product of its digits is 36000, while the sum is 32.

The square root of 253544531 is about 15923.0817054991. The cubic root of 253544531 is about 632.9237837569.

Adding to 253544531 its reverse (135445352), we get a palindrome (388989883).

The spelling of 253544531 in words is "two hundred fifty-three million, five hundred forty-four thousand, five hundred thirty-one".