204151455 has 16 divisors (see below), whose sum is σ = 362936160. Its totient is φ = 108880704.

The previous prime is 204151421. The next prime is 204151477. The reversal of 204151455 is 554151402.

204151455 is a `hidden beast` number, since 204 + 1 + 5 + 1 + 455 = 666.

It is not a de Polignac number, because 204151455 - 2⁶ = 204151391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 755982 + ... + 756251.

It is an arithmetic number, because the mean of its divisors is an integer number (22683510).

Almost surely, 2^204151455 is an apocalyptic number.

204151455 is a deficient number, since it is larger than the sum of its proper divisors (158784705).

204151455 is a wasteful number, since it uses less digits than its factorization.

204151455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512247 (or 1512241 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 204151455 is about 14288.1578588704. The cubic root of 204151455 is about 588.8221786635.

The spelling of 204151455 in words is "two hundred four million, one hundred fifty-one thousand, four hundred fifty-five".