97778353 has 2 divisors, whose sum is σ = 97778354. Its totient is φ = 97778352.

The previous prime is 97778327. The next prime is 97778411. The reversal of 97778353 is 35387779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82591744 + 15186609 = 9088^2 + 3897^2 .

It is a cyclic number.

It is not a de Polignac number, because 97778353 - 2¹³ = 97770161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97778297 and 97778306.

It is not a weakly prime, because it can be changed into another prime (97778453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48889176 + 48889177.

It is an arithmetic number, because the mean of its divisors is an integer number (48889177).

Almost surely, 2^97778353 is an apocalyptic number.

It is an amenable number.

97778353 is a deficient number, since it is larger than the sum of its proper divisors (1).

97778353 is an equidigital number, since it uses as much as digits as its factorization.

97778353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1111320, while the sum is 49.

The square root of 97778353 is about 9888.2937355238. The cubic root of 97778353 is about 460.6957854147.

The spelling of 97778353 in words is "ninety-seven million, seven hundred seventy-eight thousand, three hundred fifty-three".