205145534 has 16 divisors (see below), whose sum is σ = 339467760. Its totient is φ = 92199360.

The previous prime is 205145519. The next prime is 205145543. The reversal of 205145534 is 435541502.

It is a junction number, because it is equal to n+sod(n) for n = 205145497 and 205145506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50429 + ... + 54344.

It is an arithmetic number, because the mean of its divisors is an integer number (21216735).

Almost surely, 2^205145534 is an apocalyptic number.

205145534 is a deficient number, since it is larger than the sum of its proper divisors (134322226).

205145534 is a wasteful number, since it uses less digits than its factorization.

205145534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104875.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 205145534 is about 14322.9024293263. The cubic root of 205145534 is about 589.7763530397.

The spelling of 205145534 in words is "two hundred five million, one hundred forty-five thousand, five hundred thirty-four".