77245097 has 2 divisors, whose sum is σ = 77245098. Its totient is φ = 77245096.

The previous prime is 77245081. The next prime is 77245141. The reversal of 77245097 is 79054277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69538921 + 7706176 = 8339^2 + 2776^2 .

It is a cyclic number.

It is not a de Polignac number, because 77245097 - 2⁴ = 77245081 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77245057) 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, 38622548 + 38622549.

It is an arithmetic number, because the mean of its divisors is an integer number (38622549).

Almost surely, 2^77245097 is an apocalyptic number.

It is an amenable number.

77245097 is a deficient number, since it is larger than the sum of its proper divisors (1).

77245097 is an equidigital number, since it uses as much as digits as its factorization.

77245097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 77245097 is about 8788.9189892728. The cubic root of 77245097 is about 425.8830029093.

It can be divided in two parts, 7724 and 5097, that added together give a palindrome (12821).

The spelling of 77245097 in words is "seventy-seven million, two hundred forty-five thousand, ninety-seven".