75136481 has 8 divisors (see below), whose sum is σ = 90921600. Its totient is φ = 60614208.

The previous prime is 75136471. The next prime is 75136493. The reversal of 75136481 is 18463157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75136481 is a prime.

It is a super-2 number, since 2×75136481² = 11290981554126722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75136471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315581 + ... + 315818.

It is an arithmetic number, because the mean of its divisors is an integer number (11365200).

Almost surely, 2^75136481 is an apocalyptic number.

It is an amenable number.

75136481 is a deficient number, since it is larger than the sum of its proper divisors (15785119).

75136481 is a wasteful number, since it uses less digits than its factorization.

75136481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631423.

The product of its digits is 20160, while the sum is 35.

The square root of 75136481 is about 8668.1301905313. The cubic root of 75136481 is about 421.9719832706.

The spelling of 75136481 in words is "seventy-five million, one hundred thirty-six thousand, four hundred eighty-one".