173072051 has 4 divisors (see below), whose sum is σ = 177749712. Its totient is φ = 168394392.

The previous prime is 173072047. The next prime is 173072071. The reversal of 173072051 is 150270371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150270371 = 41 ⋅3665131.

It is a cyclic number.

It is not a de Polignac number, because 173072051 - 2² = 173072047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 173072051.

It is not an unprimeable number, because it can be changed into a prime (173072021) 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, 2338775 + ... + 2338848.

It is an arithmetic number, because the mean of its divisors is an integer number (44437428).

Almost surely, 2^173072051 is an apocalyptic number.

173072051 is a deficient number, since it is larger than the sum of its proper divisors (4677661).

173072051 is an equidigital number, since it uses as much as digits as its factorization.

173072051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677660.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 173072051 is about 13155.6851208898. The cubic root of 173072051 is about 557.2828097523.

The spelling of 173072051 in words is "one hundred seventy-three million, seventy-two thousand, fifty-one".