201050681 has 6 divisors (see below), whose sum is σ = 217705950. Its totient is φ = 185585088.

The previous prime is 201050657. The next prime is 201050683. The reversal of 201050681 is 186050102.

It can be written as a sum of positive squares in 3 ways, for example, as 4910656 + 196140025 = 2216^2 + 14005^2 .

It is not a de Polignac number, because 201050681 - 2²² = 196856377 is a prime.

It is a super-2 number, since 2×201050681² = 80842752661127522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201050683) 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, 594656 + ... + 594993.

It is an arithmetic number, because the mean of its divisors is an integer number (36284325).

Almost surely, 2^201050681 is an apocalyptic number.

It is an amenable number.

201050681 is a deficient number, since it is larger than the sum of its proper divisors (16655269).

201050681 is a wasteful number, since it uses less digits than its factorization.

201050681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189675 (or 1189662 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 201050681 is about 14179.2341471604. The cubic root of 201050681 is about 585.8258295338.

The spelling of 201050681 in words is "two hundred one million, fifty thousand, six hundred eighty-one".