172486881 has 32 divisors (see below), whose sum is σ = 292826880. Its totient is φ = 98299008.

The previous prime is 172486861. The next prime is 172486927. The reversal of 172486881 is 188684271.

172486881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172486881 - 2⁶ = 172486817 is a prime.

It is a super-2 number, since 2×172486881² = 59503448234216322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172486801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85375 + ... + 87371.

It is an arithmetic number, because the mean of its divisors is an integer number (9150840).

Almost surely, 2^172486881 is an apocalyptic number.

It is an amenable number.

172486881 is a deficient number, since it is larger than the sum of its proper divisors (120339999).

172486881 is a wasteful number, since it uses less digits than its factorization.

172486881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2464 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 172486881 is about 13133.4260952731. The cubic root of 172486881 is about 556.6540284620.

The spelling of 172486881 in words is "one hundred seventy-two million, four hundred eighty-six thousand, eight hundred eighty-one".