253132531 has 4 divisors (see below), whose sum is σ = 253330200. Its totient is φ = 252934864.

The previous prime is 253132501. The next prime is 253132547. The reversal of 253132531 is 135231352.

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

It is a cyclic number.

It is not a de Polignac number, because 253132531 - 2⁷ = 253132403 is a prime.

It is a super-2 number, since 2×253132531² = 128152156500931922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253132496 and 253132505.

It is not an unprimeable number, because it can be changed into a prime (253132501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96901 + ... + 99478.

It is an arithmetic number, because the mean of its divisors is an integer number (63332550).

Almost surely, 2^253132531 is an apocalyptic number.

253132531 is a deficient number, since it is larger than the sum of its proper divisors (197669).

253132531 is a wasteful number, since it uses less digits than its factorization.

253132531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197668.

The product of its digits is 2700, while the sum is 25.

The square root of 253132531 is about 15910.1392514333. The cubic root of 253132531 is about 632.5807723871.

Adding to 253132531 its reverse (135231352), we get a palindrome (388363883).

The spelling of 253132531 in words is "two hundred fifty-three million, one hundred thirty-two thousand, five hundred thirty-one".