1253520531 has 12 divisors (see below), whose sum is σ = 1832456808. Its totient is φ = 825611424.

The previous prime is 1253520491. The next prime is 1253520547. The reversal of 1253520531 is 1350253521.

It is a happy number.

1253520531 is a `hidden beast` number, since 125 + 3 + 5 + 2 + 0 + 531 = 666.

1253520531 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1253520531 - 2⁶ = 1253520467 is a prime.

It is a super-2 number, since 2×1253520531² = 3142627443277043922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1253520495 and 1253520504.

It is not an unprimeable number, because it can be changed into a prime (1253520031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 838290 + ... + 839783.

It is an arithmetic number, because the mean of its divisors is an integer number (152704734).

Almost surely, 2^1253520531 is an apocalyptic number.

1253520531 is a deficient number, since it is larger than the sum of its proper divisors (578936277).

1253520531 is a wasteful number, since it uses less digits than its factorization.

1253520531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678162 (or 1678159 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1253520531 is about 35405.0918795588. The cubic root of 1253520531 is about 1078.2276976299.

The spelling of 1253520531 in words is "one billion, two hundred fifty-three million, five hundred twenty thousand, five hundred thirty-one".