75005481 has 4 divisors (see below), whose sum is σ = 100007312. Its totient is φ = 50003652.

The previous prime is 75005473. The next prime is 75005501. The reversal of 75005481 is 18450057.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18450057 = 3 ⋅6150019.

It is not a de Polignac number, because 75005481 - 2³ = 75005473 is a prime.

It is a super-2 number, since 2×75005481² = 11251644360082722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75005431) 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, 12500911 + ... + 12500916.

It is an arithmetic number, because the mean of its divisors is an integer number (25001828).

Almost surely, 2^75005481 is an apocalyptic number.

It is an amenable number.

75005481 is a deficient number, since it is larger than the sum of its proper divisors (25001831).

75005481 is a wasteful number, since it uses less digits than its factorization.

75005481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25001830.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 75005481 is about 8660.5704777457. The cubic root of 75005481 is about 421.7266054105.

The spelling of 75005481 in words is "seventy-five million, five thousand, four hundred eighty-one".