1530281 has 2 divisors, whose sum is σ = 1530282. Its totient is φ = 1530280.

The previous prime is 1530233. The next prime is 1530293. The reversal of 1530281 is 1820351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1357225 + 173056 = 1165^2 + 416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1530281 is a prime.

It is a super-2 number, since 2×1530281² = 4683519877922, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1536281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765140 + 765141.

It is an arithmetic number, because the mean of its divisors is an integer number (765141).

2^1530281 is an apocalyptic number.

It is an amenable number.

1530281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530281 is an equidigital number, since it uses as much as digits as its factorization.

1530281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1530281 is about 1237.0452699881. The cubic root of 1530281 is about 115.2365891765.

The spelling of 1530281 in words is "one million, five hundred thirty thousand, two hundred eighty-one".