111499857 has 12 divisors (see below), whose sum is σ = 184063360. Its totient is φ = 63714168.

The previous prime is 111499853. The next prime is 111499873. The reversal of 111499857 is 758994111.

It is a happy number.

It is not a de Polignac number, because 111499857 - 2² = 111499853 is a prime.

It is a super-2 number, since 2×111499857² = 24864436222040898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111499853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 884857 + ... + 884982.

Almost surely, 2^111499857 is an apocalyptic number.

It is an amenable number.

111499857 is a deficient number, since it is larger than the sum of its proper divisors (72563503).

111499857 is a wasteful number, since it uses less digits than its factorization.

111499857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769852 (or 1769849 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 111499857 is about 10559.3492697230. The cubic root of 111499857 is about 481.3098727555.

The spelling of 111499857 in words is "one hundred eleven million, four hundred ninety-nine thousand, eight hundred fifty-seven".