75173047 has 4 divisors (see below), whose sum is σ = 77598016. Its totient is φ = 72748080.

The previous prime is 75173009. The next prime is 75173051. The reversal of 75173047 is 74037157.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74037157 = 211 ⋅350887.

It is a cyclic number.

It is not a de Polignac number, because 75173047 - 2⁷ = 75172919 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 (75173057) 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, 1212438 + ... + 1212499.

It is an arithmetic number, because the mean of its divisors is an integer number (19399504).

Almost surely, 2^75173047 is an apocalyptic number.

75173047 is a deficient number, since it is larger than the sum of its proper divisors (2424969).

75173047 is a wasteful number, since it uses less digits than its factorization.

75173047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424968.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 75173047 is about 8670.2391547177. The cubic root of 75173047 is about 422.0404246144.

The spelling of 75173047 in words is "seventy-five million, one hundred seventy-three thousand, forty-seven".