111520513 has 8 divisors (see below), whose sum is σ = 120494528. Its totient is φ = 102603024.

The previous prime is 111520511. The next prime is 111520517. The reversal of 111520513 is 315025111.

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 111520513 - 2¹ = 111520511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111520511) 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, 9981 + ... + 17962.

It is an arithmetic number, because the mean of its divisors is an integer number (15061816).

Almost surely, 2^111520513 is an apocalyptic number.

111520513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

111520513 is a deficient number, since it is larger than the sum of its proper divisors (8974015).

111520513 is a wasteful number, since it uses less digits than its factorization.

111520513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28263.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 111520513 is about 10560.3273150031. The cubic root of 111520513 is about 481.3395927424.

Adding to 111520513 its reverse (315025111), we get a palindrome (426545624).

The spelling of 111520513 in words is "one hundred eleven million, five hundred twenty thousand, five hundred thirteen".