78573353 has 2 divisors, whose sum is σ = 78573354. Its totient is φ = 78573352.

The previous prime is 78573323. The next prime is 78573377. The reversal of 78573353 is 35337587.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76965529 + 1607824 = 8773^2 + 1268^2 .

It is a cyclic number.

It is not a de Polignac number, because 78573353 - 2⁶ = 78573289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78573353.

It is not a weakly prime, because it can be changed into another prime (78573323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39286676 + 39286677.

It is an arithmetic number, because the mean of its divisors is an integer number (39286677).

Almost surely, 2^78573353 is an apocalyptic number.

It is an amenable number.

78573353 is a deficient number, since it is larger than the sum of its proper divisors (1).

78573353 is an equidigital number, since it uses as much as digits as its factorization.

78573353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 41.

The square root of 78573353 is about 8864.1611560260. The cubic root of 78573353 is about 428.3102116073.

The spelling of 78573353 in words is "seventy-eight million, five hundred seventy-three thousand, three hundred fifty-three".