75513481 has 4 divisors (see below), whose sum is σ = 75587200. Its totient is φ = 75439764.

The previous prime is 75513469. The next prime is 75513491. The reversal of 75513481 is 18431557.

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 not a de Polignac number, because 75513481 - 2¹⁷ = 75382409 is a prime.

It is a super-2 number, since 2×75513481² = 11404571625474722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75513401) 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, 35301 + ... + 37378.

It is an arithmetic number, because the mean of its divisors is an integer number (18896800).

Almost surely, 2^75513481 is an apocalyptic number.

It is an amenable number.

75513481 is a deficient number, since it is larger than the sum of its proper divisors (73719).

75513481 is a wasteful number, since it uses less digits than its factorization.

75513481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73718.

The product of its digits is 16800, while the sum is 34.

The square root of 75513481 is about 8689.8493082446. The cubic root of 75513481 is about 422.6765593781.

The spelling of 75513481 in words is "seventy-five million, five hundred thirteen thousand, four hundred eighty-one".