76573121 has 2 divisors, whose sum is σ = 76573122. Its totient is φ = 76573120.

The previous prime is 76573111. The next prime is 76573129. The reversal of 76573121 is 12137567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61858225 + 14714896 = 7865^2 + 3836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76573121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_4481096 and since 76573121 and 4481096 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (76573129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38286560 + 38286561.

It is an arithmetic number, because the mean of its divisors is an integer number (38286561).

Almost surely, 2^76573121 is an apocalyptic number.

It is an amenable number.

76573121 is a deficient number, since it is larger than the sum of its proper divisors (1).

76573121 is an equidigital number, since it uses as much as digits as its factorization.

76573121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 32.

The square root of 76573121 is about 8750.6068932389. The cubic root of 76573121 is about 424.6444472661.

The spelling of 76573121 in words is "seventy-six million, five hundred seventy-three thousand, one hundred twenty-one".