97501381 has 2 divisors, whose sum is σ = 97501382. Its totient is φ = 97501380.

The previous prime is 97501379. The next prime is 97501387. The reversal of 97501381 is 18310579.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96845281 + 656100 = 9841^2 + 810^2 .

It is a cyclic number.

It is not a de Polignac number, because 97501381 - 2¹ = 97501379 is a prime.

It is a super-2 number, since 2×97501381² = 19013038593814322, which contains 22 as substring.

Together with 97501379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97501387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48750690 + 48750691.

It is an arithmetic number, because the mean of its divisors is an integer number (48750691).

Almost surely, 2^97501381 is an apocalyptic number.

It is an amenable number.

97501381 is a deficient number, since it is larger than the sum of its proper divisors (1).

97501381 is an equidigital number, since it uses as much as digits as its factorization.

97501381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 97501381 is about 9874.2787584714. The cubic root of 97501381 is about 460.2603771637.

The spelling of 97501381 in words is "ninety-seven million, five hundred one thousand, three hundred eighty-one".