205501153 has 16 divisors (see below), whose sum is σ = 241992576. Its totient is φ = 172045440.

The previous prime is 205501133. The next prime is 205501181. The reversal of 205501153 is 351105502.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205501153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205501133) 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, 70501 + ... + 73357.

It is an arithmetic number, because the mean of its divisors is an integer number (15124536).

Almost surely, 2^205501153 is an apocalyptic number.

It is an amenable number.

205501153 is a deficient number, since it is larger than the sum of its proper divisors (36491423).

205501153 is a wasteful number, since it uses less digits than its factorization.

205501153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 205501153 is about 14335.3114022682. The cubic root of 205501153 is about 590.1169479943.

Adding to 205501153 its reverse (351105502), we get a palindrome (556606655).

The spelling of 205501153 in words is "two hundred five million, five hundred one thousand, one hundred fifty-three".