111252545 has 4 divisors (see below), whose sum is σ = 133503060. Its totient is φ = 89002032.

The previous prime is 111252509. The next prime is 111252569. The reversal of 111252545 is 545252111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545252111 = 73 ⋅7469207.

It can be written as a sum of positive squares in 2 ways, for example, as 67043344 + 44209201 = 8188^2 + 6649^2 .

It is a cyclic number.

It is not a de Polignac number, because 111252545 - 2¹⁶ = 111187009 is a prime.

It is a super-3 number, since 3×111252545³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11125250 + ... + 11125259.

It is an arithmetic number, because the mean of its divisors is an integer number (33375765).

Almost surely, 2^111252545 is an apocalyptic number.

It is an amenable number.

111252545 is a deficient number, since it is larger than the sum of its proper divisors (22250515).

111252545 is an equidigital number, since it uses as much as digits as its factorization.

111252545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22250514.

The product of its digits is 2000, while the sum is 26.

The square root of 111252545 is about 10547.6321987449. The cubic root of 111252545 is about 480.9537532455.

The spelling of 111252545 in words is "one hundred eleven million, two hundred fifty-two thousand, five hundred forty-five".