75547913 has 4 divisors (see below), whose sum is σ = 86340480. Its totient is φ = 64755348.

The previous prime is 75547903. The next prime is 75547921. The reversal of 75547913 is 31974557.

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: 31974557 = 859 ⋅37223.

It is not a de Polignac number, because 75547913 - 2⁴ = 75547897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75547903) 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, 5396273 + ... + 5396286.

It is an arithmetic number, because the mean of its divisors is an integer number (21585120).

Almost surely, 2^75547913 is an apocalyptic number.

It is an amenable number.

75547913 is a deficient number, since it is larger than the sum of its proper divisors (10792567).

75547913 is a wasteful number, since it uses less digits than its factorization.

75547913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10792566.

The product of its digits is 132300, while the sum is 41.

The square root of 75547913 is about 8691.8302445457. The cubic root of 75547913 is about 422.7407924468.

The spelling of 75547913 in words is "seventy-five million, five hundred forty-seven thousand, nine hundred thirteen".