127522981 has 8 divisors (see below), whose sum is σ = 128744000. Its totient is φ = 126308160.

The previous prime is 127522963. The next prime is 127523023. The reversal of 127522981 is 189225721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127522981 - 2⁵ = 127522949 is a prime.

It is a super-2 number, since 2×127522981² = 32524221366252722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127522981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127522931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46630 + ... + 49288.

It is an arithmetic number, because the mean of its divisors is an integer number (16093000).

Almost surely, 2^127522981 is an apocalyptic number.

It is an amenable number.

127522981 is a deficient number, since it is larger than the sum of its proper divisors (1221019).

127522981 is a wasteful number, since it uses less digits than its factorization.

127522981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099.

The product of its digits is 20160, while the sum is 37.

The square root of 127522981 is about 11292.6073605700. The cubic root of 127522981 is about 503.3415924360.

The spelling of 127522981 in words is "one hundred twenty-seven million, five hundred twenty-two thousand, nine hundred eighty-one".