77545093 has 2 divisors, whose sum is σ = 77545094. Its totient is φ = 77545092.

The previous prime is 77545049. The next prime is 77545123. The reversal of 77545093 is 39054577.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59243809 + 18301284 = 7697^2 + 4278^2 .

It is a cyclic number.

It is not a de Polignac number, because 77545093 - 2⁹ = 77544581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77545003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38772546 + 38772547.

It is an arithmetic number, because the mean of its divisors is an integer number (38772547).

Almost surely, 2^77545093 is an apocalyptic number.

It is an amenable number.

77545093 is a deficient number, since it is larger than the sum of its proper divisors (1).

77545093 is an equidigital number, since it uses as much as digits as its factorization.

77545093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 77545093 is about 8805.9691686946. The cubic root of 77545093 is about 426.4336232106.

The spelling of 77545093 in words is "seventy-seven million, five hundred forty-five thousand, ninety-three".