77254081 has 2 divisors, whose sum is σ = 77254082. Its totient is φ = 77254080.

The previous prime is 77254043. The next prime is 77254117. The reversal of 77254081 is 18045277.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46117681 + 31136400 = 6791^2 + 5580^2 .

It is a cyclic number.

It is not a de Polignac number, because 77254081 - 2²¹ = 75156929 is a prime.

It is a super-2 number, since 2×77254081² = 11936386062309122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77254181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38627040 + 38627041.

It is an arithmetic number, because the mean of its divisors is an integer number (38627041).

Almost surely, 2^77254081 is an apocalyptic number.

It is an amenable number.

77254081 is a deficient number, since it is larger than the sum of its proper divisors (1).

77254081 is an equidigital number, since it uses as much as digits as its factorization.

77254081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 77254081 is about 8789.4300725360. The cubic root of 77254081 is about 425.8995130600.

The spelling of 77254081 in words is "seventy-seven million, two hundred fifty-four thousand, eighty-one".