75216371 has 4 divisors (see below), whose sum is σ = 78486672. Its totient is φ = 71946072.

The previous prime is 75216367. The next prime is 75216377. The reversal of 75216371 is 17361257.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17361257 = 2131 ⋅8147.

It is a cyclic number.

It is not a de Polignac number, because 75216371 - 2² = 75216367 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75216377) 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, 1635116 + ... + 1635161.

It is an arithmetic number, because the mean of its divisors is an integer number (19621668).

Almost surely, 2^75216371 is an apocalyptic number.

75216371 is a deficient number, since it is larger than the sum of its proper divisors (3270301).

75216371 is a wasteful number, since it uses less digits than its factorization.

75216371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270300.

The product of its digits is 8820, while the sum is 32.

The square root of 75216371 is about 8672.7372265047. The cubic root of 75216371 is about 422.1214863274.

The spelling of 75216371 in words is "seventy-five million, two hundred sixteen thousand, three hundred seventy-one".