172540466 has 24 divisors (see below), whose sum is σ = 301674780. Its totient is φ = 73796352.

The previous prime is 172540441. The next prime is 172540469. The reversal of 172540466 is 664045271.

It can be written as a sum of positive squares in 2 ways, for example, as 157879225 + 14661241 = 12565^2 + 3829^2 .

It is not an unprimeable number, because it can be changed into a prime (172540469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56630 + ... + 59598.

Almost surely, 2^172540466 is an apocalyptic number.

172540466 is a deficient number, since it is larger than the sum of its proper divisors (129134314).

172540466 is a wasteful number, since it uses less digits than its factorization.

172540466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578 (or 3571 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 172540466 is about 13135.4659605208. The cubic root of 172540466 is about 556.7116661166.

The spelling of 172540466 in words is "one hundred seventy-two million, five hundred forty thousand, four hundred sixty-six".