205551545 has 16 divisors (see below), whose sum is σ = 255774720. Its totient is φ = 158414400.

The previous prime is 205551523. The next prime is 205551559. The reversal of 205551545 is 545155502.

205551545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205551545 - 2⁸ = 205551289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32600 + ... + 38390.

It is an arithmetic number, because the mean of its divisors is an integer number (15985920).

Almost surely, 2^205551545 is an apocalyptic number.

It is an amenable number.

205551545 is a deficient number, since it is larger than the sum of its proper divisors (50223175).

205551545 is a wasteful number, since it uses less digits than its factorization.

205551545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6056.

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 205551545 is about 14337.0689124381. The cubic root of 205551545 is about 590.1651792612.

The spelling of 205551545 in words is "two hundred five million, five hundred fifty-one thousand, five hundred forty-five".