205551950 has 48 divisors (see below), whose sum is σ = 389975040. Its totient is φ = 80596320.

The previous prime is 205551893. The next prime is 205551953. The reversal of 205551950 is 59155502.

205551950 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×205551950³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205551953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 859931 + ... + 860169.

It is an arithmetic number, because the mean of its divisors is an integer number (8124480).

Almost surely, 2^205551950 is an apocalyptic number.

205551950 is a deficient number, since it is larger than the sum of its proper divisors (184423090).

205551950 is a wasteful number, since it uses less digits than its factorization.

205551950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 32.

The square root of 205551950 is about 14337.0830366571. The cubic root of 205551950 is about 590.1655668635.

The spelling of 205551950 in words is "two hundred five million, five hundred fifty-one thousand, nine hundred fifty".