2563545 has 32 divisors (see below), whose sum is σ = 4377600. Its totient is φ = 1278720.

The previous prime is 2563543. The next prime is 2563553. The reversal of 2563545 is 5453652.

It is not a de Polignac number, because 2563545 - 2¹ = 2563543 is a prime.

Its product of digits (18000) is a multiple of the sum of its prime divisors (225).

It is not an unprimeable number, because it can be changed into a prime (2563543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17131 + ... + 17279.

It is an arithmetic number, because the mean of its divisors is an integer number (136800).

2^2563545 is an apocalyptic number.

It is an amenable number.

2563545 is a deficient number, since it is larger than the sum of its proper divisors (1814055).

2563545 is a wasteful number, since it uses less digits than its factorization.

2563545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its digits is 18000, while the sum is 30.

The square root of 2563545 is about 1601.1074292501. The cubic root of 2563545 is about 136.8611910341.

The spelling of 2563545 in words is "two million, five hundred sixty-three thousand, five hundred forty-five".