75582721 has 16 divisors (see below), whose sum is σ = 80494848. Its totient is φ = 70876800.

The previous prime is 75582709. The next prime is 75582733. The reversal of 75582721 is 12728557.

It is an interprime number because it is at equal distance from previous prime (75582709) and next prime (75582733).

It is a cyclic number.

It is not a de Polignac number, because 75582721 - 2⁷ = 75582593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75582701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117226 + ... + 117868.

It is an arithmetic number, because the mean of its divisors is an integer number (5030928).

Almost surely, 2^75582721 is an apocalyptic number.

It is an amenable number.

75582721 is a deficient number, since it is larger than the sum of its proper divisors (4912127).

75582721 is a wasteful number, since it uses less digits than its factorization.

75582721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its digits is 39200, while the sum is 37.

The square root of 75582721 is about 8693.8323540312. The cubic root of 75582721 is about 422.8057071109.

The spelling of 75582721 in words is "seventy-five million, five hundred eighty-two thousand, seven hundred twenty-one".