97428481 has 2 divisors, whose sum is σ = 97428482. Its totient is φ = 97428480.

The previous prime is 97428473. The next prime is 97428491. The reversal of 97428481 is 18482479.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95238081 + 2190400 = 9759^2 + 1480^2 .

It is a cyclic number.

It is not a de Polignac number, because 97428481 - 2³ = 97428473 is a prime.

It is a super-2 number, since 2×97428481² = 18984617819934722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97428491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48714240 + 48714241.

It is an arithmetic number, because the mean of its divisors is an integer number (48714241).

Almost surely, 2^97428481 is an apocalyptic number.

It is an amenable number.

97428481 is a deficient number, since it is larger than the sum of its proper divisors (1).

97428481 is an equidigital number, since it uses as much as digits as its factorization.

97428481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 43.

The square root of 97428481 is about 9870.5866593633. The cubic root of 97428481 is about 460.1456391400.

The spelling of 97428481 in words is "ninety-seven million, four hundred twenty-eight thousand, four hundred eighty-one".