111552251 has 2 divisors, whose sum is σ = 111552252. Its totient is φ = 111552250.

The previous prime is 111552247. The next prime is 111552293. The reversal of 111552251 is 152255111.

111552251 is nontrivially palindromic in base 3.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111552251 - 2² = 111552247 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111552451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55776125 + 55776126.

It is an arithmetic number, because the mean of its divisors is an integer number (55776126).

Almost surely, 2^111552251 is an apocalyptic number.

111552251 is a deficient number, since it is larger than the sum of its proper divisors (1).

111552251 is an equidigital number, since it uses as much as digits as its factorization.

111552251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500, while the sum is 23.

The square root of 111552251 is about 10561.8299077385. The cubic root of 111552251 is about 481.3852504323.

The spelling of 111552251 in words is "one hundred eleven million, five hundred fifty-two thousand, two hundred fifty-one".