201264651 has 24 divisors (see below), whose sum is σ = 346694400. Its totient is φ = 110007216.

The previous prime is 201264641. The next prime is 201264659. The reversal of 201264651 is 156462102.

201264651 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 6 + 4 + 651 = 666.

It is not a de Polignac number, because 201264651 - 2¹⁰ = 201263627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201264659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68001 + ... + 70898.

It is an arithmetic number, because the mean of its divisors is an integer number (14445600).

Almost surely, 2^201264651 is an apocalyptic number.

201264651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201264651 is a deficient number, since it is larger than the sum of its proper divisors (145429749).

201264651 is a wasteful number, since it uses less digits than its factorization.

201264651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138935 (or 138932 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 201264651 is about 14186.7773296122. Note that the first 3 decimals coincide. The cubic root of 201264651 is about 586.0335793250.

The spelling of 201264651 in words is "two hundred one million, two hundred sixty-four thousand, six hundred fifty-one".