75165481 has 4 divisors (see below), whose sum is σ = 76397764. Its totient is φ = 73933200.

The previous prime is 75165473. The next prime is 75165487. The reversal of 75165481 is 18456157.

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 43626025 + 31539456 = 6605^2 + 5616^2 .

It is a cyclic number.

It is not a de Polignac number, because 75165481 - 2³ = 75165473 is a prime.

It is a super-2 number, since 2×75165481² = 11299699067922722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75165481.

It is not an unprimeable number, because it can be changed into a prime (75165487) 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, 616050 + ... + 616171.

It is an arithmetic number, because the mean of its divisors is an integer number (19099441).

Almost surely, 2^75165481 is an apocalyptic number.

It is an amenable number.

75165481 is a deficient number, since it is larger than the sum of its proper divisors (1232283).

75165481 is a wasteful number, since it uses less digits than its factorization.

75165481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232282.

The product of its digits is 33600, while the sum is 37.

The square root of 75165481 is about 8669.8028235941. The cubic root of 75165481 is about 422.0262649960.

The spelling of 75165481 in words is "seventy-five million, one hundred sixty-five thousand, four hundred eighty-one".