172046745 has 96 divisors (see below), whose sum is σ = 339655680. Its totient is φ = 79971840.

The previous prime is 172046711. The next prime is 172046747. The reversal of 172046745 is 547640271.

It is not a de Polignac number, because 172046745 - 2⁷ = 172046617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172046747) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 961066 + ... + 961244.

It is an arithmetic number, because the mean of its divisors is an integer number (3538080).

Almost surely, 2^172046745 is an apocalyptic number.

172046745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172046745 is a deficient number, since it is larger than the sum of its proper divisors (167608935).

172046745 is a wasteful number, since it uses less digits than its factorization.

172046745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 172046745 is about 13116.6590639537. The cubic root of 172046745 is about 556.1801524888.

The spelling of 172046745 in words is "one hundred seventy-two million, forty-six thousand, seven hundred forty-five".