200055731 has 6 divisors (see below), whose sum is σ = 211139532. Its totient is φ = 189526140.

The previous prime is 200055727. The next prime is 200055749. The reversal of 200055731 is 137550002.

It is not a de Polignac number, because 200055731 - 2² = 200055727 is a prime.

It is a super-2 number, since 2×200055731² = 80044591011888722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200055697 and 200055706.

It is not an unprimeable number, because it can be changed into a prime (200055701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 276725 + ... + 277446.

It is an arithmetic number, because the mean of its divisors is an integer number (35189922).

Almost surely, 2^200055731 is an apocalyptic number.

200055731 is a deficient number, since it is larger than the sum of its proper divisors (11083801).

200055731 is an equidigital number, since it uses as much as digits as its factorization.

200055731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554209 (or 554190 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 200055731 is about 14144.1058748865. The cubic root of 200055731 is about 584.8578620754.

The spelling of 200055731 in words is "two hundred million, fifty-five thousand, seven hundred thirty-one".