127472545 has 16 divisors (see below), whose sum is σ = 167553360. Its totient is φ = 92667904.

The previous prime is 127472533. The next prime is 127472551. The reversal of 127472545 is 545274721.

127472545 = 7983² + 7984².

It can be written as a sum of positive squares in 8 ways, for example, as 3996001 + 123476544 = 1999^2 + 11112^2 .

It is a cyclic number.

It is not a de Polignac number, because 127472545 - 2¹⁹ = 126948257 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23392 + ... + 28321.

It is an arithmetic number, because the mean of its divisors is an integer number (10472085).

Almost surely, 2^127472545 is an apocalyptic number.

127472545 is the 7984-th centered square number.

It is an amenable number.

127472545 is a deficient number, since it is larger than the sum of its proper divisors (40080815).

127472545 is a wasteful number, since it uses less digits than its factorization.

127472545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51764.

The product of its digits is 78400, while the sum is 37.

The square root of 127472545 is about 11290.3739973484. The cubic root of 127472545 is about 503.2752256161.

The spelling of 127472545 in words is "one hundred twenty-seven million, four hundred seventy-two thousand, five hundred forty-five".