256053545 has 12 divisors (see below), whose sum is σ = 337737540. Its totient is φ = 186220320.

The previous prime is 256053533. The next prime is 256053563. The reversal of 256053545 is 545350652.

It can be written as a sum of positive squares in 2 ways, for example, as 196084009 + 59969536 = 14003^2 + 7744^2 .

It is not a de Polignac number, because 256053545 - 2⁴ = 256053529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211010 + ... + 212219.

It is an arithmetic number, because the mean of its divisors is an integer number (28144795).

Almost surely, 2^256053545 is an apocalyptic number.

It is an amenable number.

256053545 is a deficient number, since it is larger than the sum of its proper divisors (81683995).

256053545 is a wasteful number, since it uses less digits than its factorization.

256053545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423256 (or 423245 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 256053545 is about 16001.6731937632. The cubic root of 256053545 is about 635.0046871748.

The spelling of 256053545 in words is "two hundred fifty-six million, fifty-three thousand, five hundred forty-five".