97818451 has 2 divisors, whose sum is σ = 97818452. Its totient is φ = 97818450.

The previous prime is 97818439. The next prime is 97818463. The reversal of 97818451 is 15481879.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (97818439) and next prime (97818463).

It is a cyclic number.

It is not a de Polignac number, because 97818451 - 2⁹ = 97817939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97818398 and 97818407.

It is not a weakly prime, because it can be changed into another prime (97818431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48909225 + 48909226.

It is an arithmetic number, because the mean of its divisors is an integer number (48909226).

Almost surely, 2^97818451 is an apocalyptic number.

97818451 is a deficient number, since it is larger than the sum of its proper divisors (1).

97818451 is an equidigital number, since it uses as much as digits as its factorization.

97818451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 43.

The square root of 97818451 is about 9890.3210766891. The cubic root of 97818451 is about 460.7587525044.

The spelling of 97818451 in words is "ninety-seven million, eight hundred eighteen thousand, four hundred fifty-one".