77252269 has 2 divisors, whose sum is σ = 77252270. Its totient is φ = 77252268.

The previous prime is 77252261. The next prime is 77252297. The reversal of 77252269 is 96225277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73874025 + 3378244 = 8595^2 + 1838^2 .

It is a cyclic number.

It is not a de Polignac number, because 77252269 - 2³ = 77252261 is a prime.

It is a super-2 number, since 2×77252269² = 11935826131296722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77252261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38626134 + 38626135.

It is an arithmetic number, because the mean of its divisors is an integer number (38626135).

Almost surely, 2^77252269 is an apocalyptic number.

It is an amenable number.

77252269 is a deficient number, since it is larger than the sum of its proper divisors (1).

77252269 is an equidigital number, since it uses as much as digits as its factorization.

77252269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 77252269 is about 8789.3269935758. The cubic root of 77252269 is about 425.8961831995.

The spelling of 77252269 in words is "seventy-seven million, two hundred fifty-two thousand, two hundred sixty-nine".