172149546 has 8 divisors (see below), whose sum is σ = 344299104. Its totient is φ = 57383180.

The previous prime is 172149499. The next prime is 172149547. The reversal of 172149546 is 645941271.

It is a sphenic number, since it is the product of 3 distinct primes.

172149546 is an admirable number.

It is a super-2 number, since 2×172149546² = 59270932376012232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172149547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14345790 + ... + 14345801.

It is an arithmetic number, because the mean of its divisors is an integer number (43037388).

Almost surely, 2^172149546 is an apocalyptic number.

172149546 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172149546 is a wasteful number, since it uses less digits than its factorization.

172149546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28691596.

The product of its digits is 60480, while the sum is 39.

The square root of 172149546 is about 13120.5771976693. The cubic root of 172149546 is about 556.2909062877.

The spelling of 172149546 in words is "one hundred seventy-two million, one hundred forty-nine thousand, five hundred forty-six".