76755121 has 3 divisors (see below), whose sum is σ = 76763883. Its totient is φ = 76746360.

The previous prime is 76755109. The next prime is 76755139. The reversal of 76755121 is 12155767.

It is a happy number.

The square root of 76755121 is 8761.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12155767 = 13 ⋅935059.

It can be written as a sum of positive squares in only one way, i.e., 6195121 + 70560000 = 2489^2 + 8400^2 .

It is not a de Polignac number, because 76755121 - 2¹¹ = 76753073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76755181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4381 + ... + 13141.

It is an arithmetic number, because the mean of its divisors is an integer number (25587961).

Almost surely, 2^76755121 is an apocalyptic number.

76755121 is the 8761-st square number.

76755121 is the 4381-st centered octagonal number.

It is an amenable number.

76755121 is a deficient number, since it is larger than the sum of its proper divisors (8762).

76755121 is an frugal number, since it uses more digits than its factorization.

76755121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17522 (or 8761 counting only the distinct ones).

The product of its digits is 14700, while the sum is 34.

The cubic root of 76755121 is about 424.9806145714.

The spelling of 76755121 in words is "seventy-six million, seven hundred fifty-five thousand, one hundred twenty-one".