205530998 has 4 divisors (see below), whose sum is σ = 308296500. Its totient is φ = 102765498.

The previous prime is 205530977. The next prime is 205531019. The reversal of 205530998 is 899035502.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (205530977) and next prime (205531019).

It is a super-2 number, since 2×205530998² = 84485982277752008, which contains 22 as substring.

It is a Curzon number.

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, 51382748 + ... + 51382751.

It is an arithmetic number, because the mean of its divisors is an integer number (77074125).

Almost surely, 2^205530998 is an apocalyptic number.

205530998 is a deficient number, since it is larger than the sum of its proper divisors (102765502).

205530998 is a wasteful number, since it uses less digits than its factorization.

205530998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102765501.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 205530998 is about 14336.3523254697. The cubic root of 205530998 is about 590.1455142375.

The spelling of 205530998 in words is "two hundred five million, five hundred thirty thousand, nine hundred ninety-eight".