204612051 has 16 divisors (see below), whose sum is σ = 330130944. Its totient is φ = 110043264.

The previous prime is 204612049. The next prime is 204612053. The reversal of 204612051 is 150216402.

It is an interprime number because it is at equal distance from previous prime (204612049) and next prime (204612053).

It is not a de Polignac number, because 204612051 - 2¹ = 204612049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (204612053) 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, 286215 + ... + 286928.

It is an arithmetic number, because the mean of its divisors is an integer number (20633184).

Almost surely, 2^204612051 is an apocalyptic number.

204612051 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

204612051 is a deficient number, since it is larger than the sum of its proper divisors (125518893).

204612051 is a wasteful number, since it uses less digits than its factorization.

204612051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573170.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 204612051 is about 14304.2668808996. The cubic root of 204612051 is about 589.2646694812.

Adding to 204612051 its reverse (150216402), we get a palindrome (354828453).

The spelling of 204612051 in words is "two hundred four million, six hundred twelve thousand, fifty-one".