1520264531 has 2 divisors, whose sum is σ = 1520264532. Its totient is φ = 1520264530.

The previous prime is 1520264513. The next prime is 1520264539. The reversal of 1520264531 is 1354620251.

Together with previous prime (1520264513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1520264531 is a prime.

It is a super-2 number, since 2×1520264531² = 4622408488433299922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1520264494 and 1520264503.

It is not a weakly prime, because it can be changed into another prime (1520264539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760132265 + 760132266.

It is an arithmetic number, because the mean of its divisors is an integer number (760132266).

Almost surely, 2^1520264531 is an apocalyptic number.

1520264531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520264531 is an equidigital number, since it uses as much as digits as its factorization.

1520264531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1520264531 is about 38990.5697701380. The cubic root of 1520264531 is about 1149.8461119855.

Adding to 1520264531 its reverse (1354620251), we get a palindrome (2874884782).

The spelling of 1520264531 in words is "one billion, five hundred twenty million, two hundred sixty-four thousand, five hundred thirty-one".