1115521423 has 8 divisors (see below), whose sum is σ = 1132151328. Its totient is φ = 1099010304.

The previous prime is 1115521417. The next prime is 1115521427. The reversal of 1115521423 is 3241255111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1115521423 - 2²¹ = 1113424271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115521427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10686 + ... + 48427.

It is an arithmetic number, because the mean of its divisors is an integer number (141518916).

Almost surely, 2^1115521423 is an apocalyptic number.

1115521423 is a deficient number, since it is larger than the sum of its proper divisors (16629905).

1115521423 is a wasteful number, since it uses less digits than its factorization.

1115521423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59393.

The product of its digits is 1200, while the sum is 25.

The square root of 1115521423 is about 33399.4224950073. The cubic root of 1115521423 is about 1037.1127459358.

Adding to 1115521423 its reverse (3241255111), we get a palindrome (4356776534).

The spelling of 1115521423 in words is "one billion, one hundred fifteen million, five hundred twenty-one thousand, four hundred twenty-three".