1521025043 has 2 divisors, whose sum is σ = 1521025044. Its totient is φ = 1521025042.

The previous prime is 1521025039. The next prime is 1521025061. The reversal of 1521025043 is 3405201251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1521025043 - 2² = 1521025039 is a prime.

It is not a weakly prime, because it can be changed into another prime (1521025063) 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, 760512521 + 760512522.

It is an arithmetic number, because the mean of its divisors is an integer number (760512522).

Almost surely, 2^1521025043 is an apocalyptic number.

1521025043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521025043 is an equidigital number, since it uses as much as digits as its factorization.

1521025043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1521025043 is about 39000.3210627810. The cubic root of 1521025043 is about 1150.0378167778.

Adding to 1521025043 its reverse (3405201251), we get a palindrome (4926226294).

The spelling of 1521025043 in words is "one billion, five hundred twenty-one million, twenty-five thousand, forty-three".