76325521 has 4 divisors (see below), whose sum is σ = 76345344. Its totient is φ = 76305700.

The previous prime is 76325507. The next prime is 76325533. The reversal of 76325521 is 12552367.

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: 12552367 = 3457 ⋅3631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76325521 is a prime.

It is a super-3 number, since 3×76325521³ (a number of 25 digits) contains 333 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 not an unprimeable number, because it can be changed into a prime (76325551) 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, 2065 + ... + 12526.

It is an arithmetic number, because the mean of its divisors is an integer number (19086336).

Almost surely, 2^76325521 is an apocalyptic number.

It is an amenable number.

76325521 is a deficient number, since it is larger than the sum of its proper divisors (19823).

76325521 is a wasteful number, since it uses less digits than its factorization.

76325521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19822.

The product of its digits is 12600, while the sum is 31.

The square root of 76325521 is about 8736.4478479529. The cubic root of 76325521 is about 424.1862556114.

Adding to 76325521 its reverse (12552367), we get a palindrome (88877888).

The spelling of 76325521 in words is "seventy-six million, three hundred twenty-five thousand, five hundred twenty-one".