201061251 has 16 divisors (see below), whose sum is σ = 298116000. Its totient is φ = 133929504.

The previous prime is 201061243. The next prime is 201061283. The reversal of 201061251 is 152160102.

201061251 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 612 + 51 = 666.

It is not a de Polignac number, because 201061251 - 2³ = 201061243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201061151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41925 + ... + 46473.

It is an arithmetic number, because the mean of its divisors is an integer number (18632250).

Almost surely, 2^201061251 is an apocalyptic number.

201061251 is a deficient number, since it is larger than the sum of its proper divisors (97054749).

201061251 is a wasteful number, since it uses less digits than its factorization.

201061251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6195 (or 6189 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 201061251 is about 14179.6068704319. The cubic root of 201061251 is about 585.8360957189.

The spelling of 201061251 in words is "two hundred one million, sixty-one thousand, two hundred fifty-one".