1530457 has 2 divisors, whose sum is σ = 1530458. Its totient is φ = 1530456.

The previous prime is 1530409. The next prime is 1530511. The reversal of 1530457 is 7540351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1354896 + 175561 = 1164^2 + 419^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530457 - 2⁷ = 1530329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1530157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765228 + 765229.

It is an arithmetic number, because the mean of its divisors is an integer number (765229).

2^1530457 is an apocalyptic number.

It is an amenable number.

1530457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530457 is an equidigital number, since it uses as much as digits as its factorization.

1530457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 1530457 is about 1237.1164051939. The cubic root of 1530457 is about 115.2410068536.

The spelling of 1530457 in words is "one million, five hundred thirty thousand, four hundred fifty-seven".