75480217 has 4 divisors (see below), whose sum is σ = 79452880. Its totient is φ = 71507556.

The previous prime is 75480203. The next prime is 75480281. The reversal of 75480217 is 71208457.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75480217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75489217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1986303 + ... + 1986340.

It is an arithmetic number, because the mean of its divisors is an integer number (19863220).

Almost surely, 2^75480217 is an apocalyptic number.

It is an amenable number.

75480217 is a deficient number, since it is larger than the sum of its proper divisors (3972663).

75480217 is a wasteful number, since it uses less digits than its factorization.

75480217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972662.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 75480217 is about 8687.9351401815. The cubic root of 75480217 is about 422.6144866732.

The spelling of 75480217 in words is "seventy-five million, four hundred eighty thousand, two hundred seventeen".