74571131 has 4 divisors (see below), whose sum is σ = 75002352. Its totient is φ = 74139912.

The previous prime is 74571113. The next prime is 74571139. The reversal of 74571131 is 13117547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74571131 is a prime.

It is a super-2 number, since 2×74571131² = 11121707157238322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74571094 and 74571103.

It is not an unprimeable number, because it can be changed into a prime (74571139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215351 + ... + 215696.

It is an arithmetic number, because the mean of its divisors is an integer number (18750588).

Almost surely, 2^74571131 is an apocalyptic number.

74571131 is a deficient number, since it is larger than the sum of its proper divisors (431221).

74571131 is a wasteful number, since it uses less digits than its factorization.

74571131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431220.

The product of its digits is 2940, while the sum is 29.

The square root of 74571131 is about 8635.4577759375. The cubic root of 74571131 is about 420.9109686612.

Adding to 74571131 its reverse (13117547), we get a palindrome (87688678).

The spelling of 74571131 in words is "seventy-four million, five hundred seventy-one thousand, one hundred thirty-one".