75150217 has 4 divisors (see below), whose sum is σ = 79570836. Its totient is φ = 70729600.

The previous prime is 75150209. The next prime is 75150221. The reversal of 75150217 is 71205157.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69288976 + 5861241 = 8324^2 + 2421^2 .

It is a cyclic number.

It is not a de Polignac number, because 75150217 - 2³ = 75150209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75150277) 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, 2210284 + ... + 2210317.

It is an arithmetic number, because the mean of its divisors is an integer number (19892709).

Almost surely, 2^75150217 is an apocalyptic number.

It is an amenable number.

75150217 is a deficient number, since it is larger than the sum of its proper divisors (4420619).

75150217 is a wasteful number, since it uses less digits than its factorization.

75150217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420618.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 75150217 is about 8668.9224820620. The cubic root of 75150217 is about 421.9976958313.

The spelling of 75150217 in words is "seventy-five million, one hundred fifty thousand, two hundred seventeen".