1113501521 has 4 divisors (see below), whose sum is σ = 1214728944. Its totient is φ = 1012274100.

The previous prime is 1113501481. The next prime is 1113501527. The reversal of 1113501521 is 1251053111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1113501521 - 2¹⁴ = 1113485137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113501493 and 1113501502.

It is not an unprimeable number, because it can be changed into a prime (1113501527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50613695 + ... + 50613716.

It is an arithmetic number, because the mean of its divisors is an integer number (303682236).

Almost surely, 2^1113501521 is an apocalyptic number.

1113501521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1113501521 is a deficient number, since it is larger than the sum of its proper divisors (101227423).

1113501521 is a wasteful number, since it uses less digits than its factorization.

1113501521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101227422.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1113501521 is about 33369.1702174327. The cubic root of 1113501521 is about 1036.4863925706.

Adding to 1113501521 its reverse (1251053111), we get a palindrome (2364554632).

The spelling of 1113501521 in words is "one billion, one hundred thirteen million, five hundred one thousand, five hundred twenty-one".