205450004 has 6 divisors (see below), whose sum is σ = 359537514. Its totient is φ = 102725000.

The previous prime is 205449997. The next prime is 205450031. The reversal of 205450004 is 400054502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 203632900 + 1817104 = 14270^2 + 1348^2 .

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, 25681247 + ... + 25681254.

It is an arithmetic number, because the mean of its divisors is an integer number (59922919).

Almost surely, 2^205450004 is an apocalyptic number.

It is an amenable number.

205450004 is a deficient number, since it is larger than the sum of its proper divisors (154087510).

205450004 is a wasteful number, since it uses less digits than its factorization.

205450004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51362505 (or 51362503 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 205450004 is about 14333.5272700058. The cubic root of 205450004 is about 590.0679841224.

The spelling of 205450004 in words is "two hundred five million, four hundred fifty thousand, four".