201456530 has 48 divisors (see below), whose sum is σ = 400583232. Its totient is φ = 72890400.

The previous prime is 201456529. The next prime is 201456589. The reversal of 201456530 is 35654102.

It is a super-3 number, since 3×201456530³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 201456530.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 400259 + ... + 400761.

It is an arithmetic number, because the mean of its divisors is an integer number (8345484).

Almost surely, 2^201456530 is an apocalyptic number.

201456530 is a deficient number, since it is larger than the sum of its proper divisors (199126702).

201456530 is a wasteful number, since it uses less digits than its factorization.

201456530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 201456530 is about 14193.5383185448. The cubic root of 201456530 is about 586.2197551238.

The spelling of 201456530 in words is "two hundred one million, four hundred fifty-six thousand, five hundred thirty".