172005044 has 6 divisors (see below), whose sum is σ = 301008834. Its totient is φ = 86002520.

The previous prime is 172005037. The next prime is 172005059. The reversal of 172005044 is 440500271.

It can be written as a sum of positive squares in only one way, i.e., 149328400 + 22676644 = 12220^2 + 4762^2 .

It is a super-2 number, since 2×172005044² = 59171470322883872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21500627 + ... + 21500634.

It is an arithmetic number, because the mean of its divisors is an integer number (50168139).

Almost surely, 2^172005044 is an apocalyptic number.

It is an amenable number.

172005044 is a deficient number, since it is larger than the sum of its proper divisors (129003790).

172005044 is a wasteful number, since it uses less digits than its factorization.

172005044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43001265 (or 43001263 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 172005044 is about 13115.0693478914. The cubic root of 172005044 is about 556.1352128753.

The spelling of 172005044 in words is "one hundred seventy-two million, five thousand, forty-four".