253040531 has 4 divisors (see below), whose sum is σ = 253628064. Its totient is φ = 252453000.

The previous prime is 253040483. The next prime is 253040539. The reversal of 253040531 is 135040352.

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 253040531 - 2²⁶ = 185931667 is a prime.

It is a super-2 number, since 2×253040531² = 128059020657523922, 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 = 253040497 and 253040506.

It is not an unprimeable number, because it can be changed into a prime (253040539) 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, 293120 + ... + 293981.

It is an arithmetic number, because the mean of its divisors is an integer number (63407016).

Almost surely, 2^253040531 is an apocalyptic number.

253040531 is a deficient number, since it is larger than the sum of its proper divisors (587533).

253040531 is an equidigital number, since it uses as much as digits as its factorization.

253040531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587532.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 253040531 is about 15907.2477506324. The cubic root of 253040531 is about 632.5041267886.

Adding to 253040531 its reverse (135040352), we get a palindrome (388080883).

The spelling of 253040531 in words is "two hundred fifty-three million, forty thousand, five hundred thirty-one".