204261556 has 6 divisors (see below), whose sum is σ = 357457730. Its totient is φ = 102130776.

The previous prime is 204261527. The next prime is 204261581. The reversal of 204261556 is 655162402.

It can be written as a sum of positive squares in only one way, i.e., 148011556 + 56250000 = 12166^2 + 7500^2 .

It is a super-2 number, since 2×204261556² = 83445566519082272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25532691 + ... + 25532698.

Almost surely, 2^204261556 is an apocalyptic number.

It is an amenable number.

204261556 is a deficient number, since it is larger than the sum of its proper divisors (153196174).

204261556 is a wasteful number, since it uses less digits than its factorization.

204261556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51065393 (or 51065391 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 204261556 is about 14292.0102155015. The cubic root of 204261556 is about 588.9280122788.

The spelling of 204261556 in words is "two hundred four million, two hundred sixty-one thousand, five hundred fifty-six".