1521090523 has 2 divisors, whose sum is σ = 1521090524. Its totient is φ = 1521090522.

The previous prime is 1521090503. The next prime is 1521090541. The reversal of 1521090523 is 3250901251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1521090523 - 2⁵ = 1521090491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1521090491 and 1521090500.

It is not a weakly prime, because it can be changed into another prime (1521090503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760545261 + 760545262.

It is an arithmetic number, because the mean of its divisors is an integer number (760545262).

Almost surely, 2^1521090523 is an apocalyptic number.

1521090523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521090523 is an equidigital number, since it uses as much as digits as its factorization.

1521090523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 1521090523 is about 39001.1605340149. The cubic root of 1521090523 is about 1150.0543195514.

Adding to 1521090523 its reverse (3250901251), we get a palindrome (4771991774).

The spelling of 1521090523 in words is "one billion, five hundred twenty-one million, ninety thousand, five hundred twenty-three".