127550231 has 2 divisors, whose sum is σ = 127550232. Its totient is φ = 127550230.

The previous prime is 127550191. The next prime is 127550239. The reversal of 127550231 is 132055721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127550231 is a prime.

It is a super-2 number, since 2×127550231² = 32538122856306722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127550231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127550239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63775115 + 63775116.

It is an arithmetic number, because the mean of its divisors is an integer number (63775116).

Almost surely, 2^127550231 is an apocalyptic number.

127550231 is a deficient number, since it is larger than the sum of its proper divisors (1).

127550231 is an equidigital number, since it uses as much as digits as its factorization.

127550231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 127550231 is about 11293.8138376724. The cubic root of 127550231 is about 503.3774423965.

The spelling of 127550231 in words is "one hundred twenty-seven million, five hundred fifty thousand, two hundred thirty-one".