78954901 has 2 divisors, whose sum is σ = 78954902. Its totient is φ = 78954900.

The previous prime is 78954871. The next prime is 78954917. The reversal of 78954901 is 10945987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78747876 + 207025 = 8874^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 78954901 - 2⁷ = 78954773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78954961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39477450 + 39477451.

It is an arithmetic number, because the mean of its divisors is an integer number (39477451).

Almost surely, 2^78954901 is an apocalyptic number.

It is an amenable number.

78954901 is a deficient number, since it is larger than the sum of its proper divisors (1).

78954901 is an equidigital number, since it uses as much as digits as its factorization.

78954901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 78954901 is about 8885.6570381711. The cubic root of 78954901 is about 429.0023762689.

The spelling of 78954901 in words is "seventy-eight million, nine hundred fifty-four thousand, nine hundred one".