78954133 has 2 divisors, whose sum is σ = 78954134. Its totient is φ = 78954132.

The previous prime is 78954119. The next prime is 78954143. The reversal of 78954133 is 33145987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77123524 + 1830609 = 8782^2 + 1353^2 .

It is a cyclic number.

It is not a de Polignac number, because 78954133 - 2²¹ = 76856981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78954143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39477066 + 39477067.

It is an arithmetic number, because the mean of its divisors is an integer number (39477067).

Almost surely, 2^78954133 is an apocalyptic number.

It is an amenable number.

78954133 is a deficient number, since it is larger than the sum of its proper divisors (1).

78954133 is an equidigital number, since it uses as much as digits as its factorization.

78954133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 78954133 is about 8885.6138223535. The cubic root of 78954133 is about 429.0009852854. Note that the first 3 decimals are identical.

The spelling of 78954133 in words is "seventy-eight million, nine hundred fifty-four thousand, one hundred thirty-three".