76509121 has 8 divisors (see below), whose sum is σ = 83195840. Its totient is φ = 69936912.

The previous prime is 76509113. The next prime is 76509131. The reversal of 76509121 is 12190567.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76509121 - 2³ = 76509113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76509131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27231 + ... + 29908.

It is an arithmetic number, because the mean of its divisors is an integer number (10399480).

Almost surely, 2^76509121 is an apocalyptic number.

It is an amenable number.

76509121 is a deficient number, since it is larger than the sum of its proper divisors (6686719).

76509121 is a wasteful number, since it uses less digits than its factorization.

76509121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57255.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 76509121 is about 8746.9492395921. The cubic root of 76509121 is about 424.5261080047.

Adding to 76509121 its reverse (12190567), we get a palindrome (88699688).

The spelling of 76509121 in words is "seventy-six million, five hundred nine thousand, one hundred twenty-one".