1512281 has 2 divisors, whose sum is σ = 1512282. Its totient is φ = 1512280.

The previous prime is 1512253. The next prime is 1512283. The reversal of 1512281 is 1822151.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 774400 + 737881 = 880^2 + 859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1512281 is a prime.

It is a super-2 number, since 2×1512281² = 4573987645922, which contains 22 as substring.

Together with 1512283, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 11.

It is not a weakly prime, because it can be changed into another prime (1512283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756140 + 756141.

It is an arithmetic number, because the mean of its divisors is an integer number (756141).

2^1512281 is an apocalyptic number.

It is an amenable number.

1512281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1512281 is an equidigital number, since it uses as much as digits as its factorization.

1512281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160, while the sum is 20.

The square root of 1512281 is about 1229.7483482404. The cubic root of 1512281 is about 114.7829807595.

The spelling of 1512281 in words is "one million, five hundred twelve thousand, two hundred eighty-one".