205512473 has 16 divisors (see below), whose sum is σ = 226800000. Its totient is φ = 185348352.

The previous prime is 205512457. The next prime is 205512497. The reversal of 205512473 is 374215502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 205512473 - 2⁴ = 205512457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205512403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67028 + ... + 70026.

It is an arithmetic number, because the mean of its divisors is an integer number (14175000).

Almost surely, 2^205512473 is an apocalyptic number.

It is an amenable number.

205512473 is a deficient number, since it is larger than the sum of its proper divisors (21287527).

205512473 is a wasteful number, since it uses less digits than its factorization.

205512473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3184.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 205512473 is about 14335.7062260636. The cubic root of 205512473 is about 590.1277832963.

Adding to 205512473 its reverse (374215502), we get a palindrome (579727975).

The spelling of 205512473 in words is "two hundred five million, five hundred twelve thousand, four hundred seventy-three".