75372331 has 4 divisors (see below), whose sum is σ = 75922632. Its totient is φ = 74822032.

The previous prime is 75372329. The next prime is 75372337. The reversal of 75372331 is 13327357.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13327357 = 239 ⋅55763.

It is a cyclic number.

It is not a de Polignac number, because 75372331 - 2¹ = 75372329 is a prime.

It is a super-2 number, since 2×75372331² = 11361976560747122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75372293 and 75372302.

It is not an unprimeable number, because it can be changed into a prime (75372337) 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, 274945 + ... + 275218.

It is an arithmetic number, because the mean of its divisors is an integer number (18980658).

Almost surely, 2^75372331 is an apocalyptic number.

75372331 is a deficient number, since it is larger than the sum of its proper divisors (550301).

75372331 is a wasteful number, since it uses less digits than its factorization.

75372331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550300.

The product of its digits is 13230, while the sum is 31.

The square root of 75372331 is about 8681.7239647434. The cubic root of 75372331 is about 422.4130390683.

Adding to 75372331 its reverse (13327357), we get a palindrome (88699688).

The spelling of 75372331 in words is "seventy-five million, three hundred seventy-two thousand, three hundred thirty-one".