1115520403 has 2 divisors, whose sum is σ = 1115520404. Its totient is φ = 1115520402.

The previous prime is 1115520397. The next prime is 1115520431. The reversal of 1115520403 is 3040255111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1115520403 - 2²¹ = 1113423251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115520443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557760201 + 557760202.

It is an arithmetic number, because the mean of its divisors is an integer number (557760202).

Almost surely, 2^1115520403 is an apocalyptic number.

1115520403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115520403 is an equidigital number, since it uses as much as digits as its factorization.

1115520403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1115520403 is about 33399.4072252787. The cubic root of 1115520403 is about 1037.1124298339.

Adding to 1115520403 its reverse (3040255111), we get a palindrome (4155775514).

The spelling of 1115520403 in words is "one billion, one hundred fifteen million, five hundred twenty thousand, four hundred three".