97453813 has 2 divisors, whose sum is σ = 97453814. Its totient is φ = 97453812.

The previous prime is 97453777. The next prime is 97453817. The reversal of 97453813 is 31835479.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55696369 + 41757444 = 7463^2 + 6462^2 .

It is a cyclic number.

It is not a de Polignac number, because 97453813 - 2²¹ = 95356661 is a prime.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97453817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48726906 + 48726907.

It is an arithmetic number, because the mean of its divisors is an integer number (48726907).

Almost surely, 2^97453813 is an apocalyptic number.

It is an amenable number.

97453813 is a deficient number, since it is larger than the sum of its proper divisors (1).

97453813 is an equidigital number, since it uses as much as digits as its factorization.

97453813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 97453813 is about 9871.8697823665. The cubic root of 97453813 is about 460.1855159095.

The spelling of 97453813 in words is "ninety-seven million, four hundred fifty-three thousand, eight hundred thirteen".