1540252556 has 12 divisors (see below), whose sum is σ = 2837307480. Its totient is φ = 729593280.

The previous prime is 1540252541. The next prime is 1540252573. The reversal of 1540252556 is 6552520451.

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 3 ways as a sum of consecutive naturals, for example, 10133165 + ... + 10133316.

It is an arithmetic number, because the mean of its divisors is an integer number (236442290).

Almost surely, 2^1540252556 is an apocalyptic number.

It is an amenable number.

1540252556 is a deficient number, since it is larger than the sum of its proper divisors (1297054924).

1540252556 is a wasteful number, since it uses less digits than its factorization.

1540252556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20266504 (or 20266502 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The square root of 1540252556 is about 39246.0514701798. The cubic root of 1540252556 is about 1154.8634749269.

The spelling of 1540252556 in words is "one billion, five hundred forty million, two hundred fifty-two thousand, five hundred fifty-six".