127326561 has 4 divisors (see below), whose sum is σ = 169768752. Its totient is φ = 84884372.

The previous prime is 127326557. The next prime is 127326587. The reversal of 127326561 is 165623721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165623721 = 3 ⋅55207907.

It is a cyclic number.

It is not a de Polignac number, because 127326561 - 2² = 127326557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127326541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21221091 + ... + 21221096.

It is an arithmetic number, because the mean of its divisors is an integer number (42442188).

Almost surely, 2^127326561 is an apocalyptic number.

It is an amenable number.

127326561 is a deficient number, since it is larger than the sum of its proper divisors (42442191).

127326561 is an equidigital number, since it uses as much as digits as its factorization.

127326561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42442190.

The product of its digits is 15120, while the sum is 33.

The square root of 127326561 is about 11283.9071690616. The cubic root of 127326561 is about 503.0830320870.

The spelling of 127326561 in words is "one hundred twenty-seven million, three hundred twenty-six thousand, five hundred sixty-one".