1540531252 has 12 divisors (see below), whose sum is σ = 2903308996. Its totient is φ = 711014400.

The previous prime is 1540531247. The next prime is 1540531261. The reversal of 1540531252 is 2521350451.

It can be written as a sum of positive squares in 2 ways, for example, as 662238756 + 878292496 = 25734^2 + 29636^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1540531252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14812749 + ... + 14812852.

Almost surely, 2^1540531252 is an apocalyptic number.

It is an amenable number.

1540531252 is a deficient number, since it is larger than the sum of its proper divisors (1362777744).

1540531252 is a wasteful number, since it uses less digits than its factorization.

1540531252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29625618 (or 29625616 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1540531252 is about 39249.6019342872. The cubic root of 1540531252 is about 1154.9331250674.

The spelling of 1540531252 in words is "one billion, five hundred forty million, five hundred thirty-one thousand, two hundred fifty-two".