201946057 has 4 divisors (see below), whose sum is σ = 202105476. Its totient is φ = 201786640.

The previous prime is 201946027. The next prime is 201946061. The reversal of 201946057 is 750649102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 167029776 + 34916281 = 12924^2 + 5909^2 .

It is a cyclic number.

It is not a de Polignac number, because 201946057 - 2¹⁵ = 201913289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201946007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77794 + ... + 80347.

It is an arithmetic number, because the mean of its divisors is an integer number (50526369).

Almost surely, 2^201946057 is an apocalyptic number.

It is an amenable number.

201946057 is a deficient number, since it is larger than the sum of its proper divisors (159419).

201946057 is a wasteful number, since it uses less digits than its factorization.

201946057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159418.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 201946057 is about 14210.7725687241. The cubic root of 201946057 is about 586.6941970480.

The spelling of 201946057 in words is "two hundred one million, nine hundred forty-six thousand, fifty-seven".