77250497 has 2 divisors, whose sum is σ = 77250498. Its totient is φ = 77250496.

The previous prime is 77250479. The next prime is 77250517. The reversal of 77250497 is 79405277.

Together with previous prime (77250479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53523856 + 23726641 = 7316^2 + 4871^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77250497 is a prime.

It is a Chen prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38625248 + 38625249.

It is an arithmetic number, because the mean of its divisors is an integer number (38625249).

Almost surely, 2^77250497 is an apocalyptic number.

It is an amenable number.

77250497 is a deficient number, since it is larger than the sum of its proper divisors (1).

77250497 is an equidigital number, since it uses as much as digits as its factorization.

77250497 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 77250497 is about 8789.2261889202. The cubic root of 77250497 is about 425.8929267954.

The spelling of 77250497 in words is "seventy-seven million, two hundred fifty thousand, four hundred ninety-seven".