201512456 has 16 divisors (see below), whose sum is σ = 381732540. Its totient is φ = 99717120.

The previous prime is 201512429. The next prime is 201512459. The reversal of 201512456 is 654215102.

It can be written as a sum of positive squares in 2 ways, for example, as 177795556 + 23716900 = 13334^2 + 4870^2 .

It is not an unprimeable number, because it can be changed into a prime (201512459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129065 + ... + 130616.

Almost surely, 2^201512456 is an apocalyptic number.

It is an amenable number.

201512456 is a deficient number, since it is larger than the sum of its proper divisors (180220084).

201512456 is a wasteful number, since it uses less digits than its factorization.

201512456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259784 (or 259780 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 201512456 is about 14195.5083036854. The cubic root of 201512456 is about 586.2739965900.

Adding to 201512456 its reverse (654215102), we get a palindrome (855727558).

The spelling of 201512456 in words is "two hundred one million, five hundred twelve thousand, four hundred fifty-six".