1253532530 has 16 divisors (see below), whose sum is σ = 2271504600. Its totient is φ = 498047232.

The previous prime is 1253532503. The next prime is 1253532541. The reversal of 1253532530 is 352353521.

It can be written as a sum of positive squares in 4 ways, for example, as 544428889 + 709103641 = 23333^2 + 26629^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1253532493 and 1253532502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419159 + ... + 422138.

Almost surely, 2^1253532530 is an apocalyptic number.

1253532530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253532530 is a deficient number, since it is larger than the sum of its proper divisors (1017972070).

1253532530 is a wasteful number, since it uses less digits than its factorization.

1253532530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841453.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 1253532530 is about 35405.2613321806. The cubic root of 1253532530 is about 1078.2311379705.

The spelling of 1253532530 in words is "one billion, two hundred fifty-three million, five hundred thirty-two thousand, five hundred thirty".