75201971 has 4 divisors (see below), whose sum is σ = 80986752. Its totient is φ = 69417192.

The previous prime is 75201961. The next prime is 75201979. The reversal of 75201971 is 17910257.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17910257 = 37 ⋅484061.

It is a de Polignac number, because none of the positive numbers 2^k-75201971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75201979) 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, 2892371 + ... + 2892396.

It is an arithmetic number, because the mean of its divisors is an integer number (20246688).

Almost surely, 2^75201971 is an apocalyptic number.

75201971 is a deficient number, since it is larger than the sum of its proper divisors (5784781).

75201971 is a wasteful number, since it uses less digits than its factorization.

75201971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784780.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 75201971 is about 8671.9069990401. The cubic root of 75201971 is about 422.0945465479.

The spelling of 75201971 in words is "seventy-five million, two hundred one thousand, nine hundred seventy-one".