77245141 has 2 divisors, whose sum is σ = 77245142. Its totient is φ = 77245140.

The previous prime is 77245097. The next prime is 77245151. The reversal of 77245141 is 14154277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48246916 + 28998225 = 6946^2 + 5385^2 .

It is a cyclic number.

It is not a de Polignac number, because 77245141 - 2¹³ = 77236949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77245151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38622570 + 38622571.

It is an arithmetic number, because the mean of its divisors is an integer number (38622571).

Almost surely, 2^77245141 is an apocalyptic number.

It is an amenable number.

77245141 is a deficient number, since it is larger than the sum of its proper divisors (1).

77245141 is an equidigital number, since it uses as much as digits as its factorization.

77245141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 31.

The square root of 77245141 is about 8788.9214924244. The cubic root of 77245141 is about 425.8830837725.

The spelling of 77245141 in words is "seventy-seven million, two hundred forty-five thousand, one hundred forty-one".