205057495 has 4 divisors (see below), whose sum is σ = 246069000. Its totient is φ = 164045992.

The previous prime is 205057487. The next prime is 205057537. The reversal of 205057495 is 594750502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205057495 - 2³ = 205057487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20505745 + ... + 20505754.

It is an arithmetic number, because the mean of its divisors is an integer number (61517250).

Almost surely, 2^205057495 is an apocalyptic number.

205057495 is a deficient number, since it is larger than the sum of its proper divisors (41011505).

205057495 is an equidigital number, since it uses as much as digits as its factorization.

205057495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41011504.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 205057495 is about 14319.8287350094. The cubic root of 205057495 is about 589.6919726996.

The spelling of 205057495 in words is "two hundred five million, fifty-seven thousand, four hundred ninety-five".