201050978 has 4 divisors (see below), whose sum is σ = 301576470. Its totient is φ = 100525488.

The previous prime is 201050947. The next prime is 201051013. The reversal of 201050978 is 879050102.

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

It can be written as a sum of positive squares in only one way, i.e., 154579489 + 46471489 = 12433^2 + 6817^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50262743 + ... + 50262746.

Almost surely, 2^201050978 is an apocalyptic number.

201050978 is a deficient number, since it is larger than the sum of its proper divisors (100525492).

201050978 is a wasteful number, since it uses less digits than its factorization.

201050978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100525491.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 201050978 is about 14179.2446202187. The cubic root of 201050978 is about 585.8261180020.

The spelling of 201050978 in words is "two hundred one million, fifty thousand, nine hundred seventy-eight".