78132953 has 2 divisors, whose sum is σ = 78132954. Its totient is φ = 78132952.

The previous prime is 78132919. The next prime is 78132979. The reversal of 78132953 is 35923187.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76247824 + 1885129 = 8732^2 + 1373^2 .

It is an emirp because it is prime and its reverse (35923187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78132953 - 2⁶ = 78132889 is a prime.

It is a super-2 number, since 2×78132953² = 12209516689000418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78132053) 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, 39066476 + 39066477.

It is an arithmetic number, because the mean of its divisors is an integer number (39066477).

Almost surely, 2^78132953 is an apocalyptic number.

It is an amenable number.

78132953 is a deficient number, since it is larger than the sum of its proper divisors (1).

78132953 is an equidigital number, since it uses as much as digits as its factorization.

78132953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 78132953 is about 8839.2846430014. The cubic root of 78132953 is about 427.5084922449.

The spelling of 78132953 in words is "seventy-eight million, one hundred thirty-two thousand, nine hundred fifty-three".