205540535 has 8 divisors (see below), whose sum is σ = 257372640. Its totient is φ = 157283104.

The previous prime is 205540493. The next prime is 205540547. The reversal of 205540535 is 535045502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205540535 - 2⁶ = 205540471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205540498 and 205540507.

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, 893540 + ... + 893769.

It is an arithmetic number, because the mean of its divisors is an integer number (32171580).

Almost surely, 2^205540535 is an apocalyptic number.

205540535 is a deficient number, since it is larger than the sum of its proper divisors (51832105).

205540535 is a wasteful number, since it uses less digits than its factorization.

205540535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787337.

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 205540535 is about 14336.6849375998. The cubic root of 205540535 is about 590.1546420265.

The spelling of 205540535 in words is "two hundred five million, five hundred forty thousand, five hundred thirty-five".