47520173 has 4 divisors (see below), whose sum is σ = 48804540. Its totient is φ = 46235808.

The previous prime is 47520169. The next prime is 47520211. The reversal of 47520173 is 37102574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37102574 = 2 ⋅18551287.

It can be written as a sum of positive squares in 2 ways, for example, as 42863209 + 4656964 = 6547^2 + 2158^2 .

It is a cyclic number.

It is not a de Polignac number, because 47520173 - 2² = 47520169 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47520103) 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, 642128 + ... + 642201.

It is an arithmetic number, because the mean of its divisors is an integer number (12201135).

Almost surely, 2^47520173 is an apocalyptic number.

It is an amenable number.

47520173 is a deficient number, since it is larger than the sum of its proper divisors (1284367).

47520173 is a wasteful number, since it uses less digits than its factorization.

47520173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284366.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 47520173 is about 6893.4877239319. The cubic root of 47520173 is about 362.2090837563.

The spelling of 47520173 in words is "forty-seven million, five hundred twenty thousand, one hundred seventy-three".