152271681 has 32 divisors (see below), whose sum is σ = 220631040. Its totient is φ = 93106944.

The previous prime is 152271671. The next prime is 152271697. The reversal of 152271681 is 186172251.

It is a de Polignac number, because none of the positive numbers 2^k-152271681 is a prime.

It is a super-2 number, since 2×152271681² = 46373329669131522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (152271611) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 302476 + ... + 302978.

It is an arithmetic number, because the mean of its divisors is an integer number (6894720).

Almost surely, 2^152271681 is an apocalyptic number.

It is an amenable number.

152271681 is a deficient number, since it is larger than the sum of its proper divisors (68359359).

152271681 is a wasteful number, since it uses less digits than its factorization.

152271681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

The product of its digits is 6720, while the sum is 33.

The square root of 152271681 is about 12339.8412064337. The cubic root of 152271681 is about 533.9981027861.

The spelling of 152271681 in words is "one hundred fifty-two million, two hundred seventy-one thousand, six hundred eighty-one".