1545001563 has 32 divisors (see below), whose sum is σ = 2523073536. Its totient is φ = 821639808.

The previous prime is 1545001561. The next prime is 1545001583. The reversal of 1545001563 is 3651005451.

It is not a de Polignac number, because 1545001563 - 2¹ = 1545001561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1545001563.

It is not an unprimeable number, because it can be changed into a prime (1545001561) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 25356 + ... + 61097.

It is an arithmetic number, because the mean of its divisors is an integer number (78846048).

Almost surely, 2^1545001563 is an apocalyptic number.

1545001563 is a deficient number, since it is larger than the sum of its proper divisors (978071973).

1545001563 is a wasteful number, since it uses less digits than its factorization.

1545001563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86523.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1545001563 is about 39306.5078962759. The cubic root of 1545001563 is about 1156.0491739138.

The spelling of 1545001563 in words is "one billion, five hundred forty-five million, one thousand, five hundred sixty-three".