201151456 has 24 divisors (see below), whose sum is σ = 432019224. Its totient is φ = 91432320.

The previous prime is 201151451. The next prime is 201151469. The reversal of 201151456 is 654151102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201151456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201151451) 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 3 ways as a sum of consecutive naturals, for example, 285375 + ... + 286078.

It is an arithmetic number, because the mean of its divisors is an integer number (18000801).

Almost surely, 2^201151456 is an apocalyptic number.

It is an amenable number.

201151456 is an abundant number, since it is smaller than the sum of its proper divisors (230867768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201151456 is a wasteful number, since it uses less digits than its factorization.

201151456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571474 (or 571466 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 201151456 is about 14182.7873142059. The cubic root of 201151456 is about 585.9236933105.

The spelling of 201151456 in words is "two hundred one million, one hundred fifty-one thousand, four hundred fifty-six".