111485551 has 8 divisors (see below), whose sum is σ = 116936640. Its totient is φ = 106162848.

The previous prime is 111485533. The next prime is 111485557. The reversal of 111485551 is 155584111.

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

It is not a de Polignac number, because 111485551 - 2¹¹ = 111483503 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 (111485557) 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, 30316 + ... + 33793.

It is an arithmetic number, because the mean of its divisors is an integer number (14617080).

Almost surely, 2^111485551 is an apocalyptic number.

111485551 is a deficient number, since it is larger than the sum of its proper divisors (5451089).

111485551 is an equidigital number, since it uses as much as digits as its factorization.

111485551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64193.

The product of its digits is 4000, while the sum is 31.

The square root of 111485551 is about 10558.6718388252. The cubic root of 111485551 is about 481.2892870384.

The spelling of 111485551 in words is "one hundred eleven million, four hundred eighty-five thousand, five hundred fifty-one".