111857461 has 2 divisors, whose sum is σ = 111857462. Its totient is φ = 111857460.

The previous prime is 111857453. The next prime is 111857477. The reversal of 111857461 is 164758111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79299025 + 32558436 = 8905^2 + 5706^2 .

It is a cyclic number.

It is not a de Polignac number, because 111857461 - 2³ = 111857453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111857411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55928730 + 55928731.

It is an arithmetic number, because the mean of its divisors is an integer number (55928731).

Almost surely, 2^111857461 is an apocalyptic number.

It is an amenable number.

111857461 is a deficient number, since it is larger than the sum of its proper divisors (1).

111857461 is an equidigital number, since it uses as much as digits as its factorization.

111857461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 34.

The square root of 111857461 is about 10576.2687654957. The cubic root of 111857461 is about 481.8238783656.

The spelling of 111857461 in words is "one hundred eleven million, eight hundred fifty-seven thousand, four hundred sixty-one".