1253532531 has 4 divisors (see below), whose sum is σ = 1671376712. Its totient is φ = 835688352.

The previous prime is 1253532503. The next prime is 1253532541. The reversal of 1253532531 is 1352353521.

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

It is not a de Polignac number, because 1253532531 - 2⁹ = 1253532019 is a prime.

It is a super-2 number, since 2×1253532531² = 3142687612550531922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253532541) 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, 208922086 + ... + 208922091.

It is an arithmetic number, because the mean of its divisors is an integer number (417844178).

Almost surely, 2^1253532531 is an apocalyptic number.

1253532531 is a deficient number, since it is larger than the sum of its proper divisors (417844181).

1253532531 is an equidigital number, since it uses as much as digits as its factorization.

1253532531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417844180.

The product of its digits is 13500, while the sum is 30.

The square root of 1253532531 is about 35405.2613463028. The cubic root of 1253532531 is about 1078.2311382572.

The spelling of 1253532531 in words is "one billion, two hundred fifty-three million, five hundred thirty-two thousand, five hundred thirty-one".