97563539 has 4 divisors (see below), whose sum is σ = 101805456. Its totient is φ = 93321624.

The previous prime is 97563533. The next prime is 97563547. The reversal of 97563539 is 93536579.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97563539 - 2⁸ = 97563283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97563493 and 97563502.

It is not an unprimeable number, because it can be changed into a prime (97563533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2120924 + ... + 2120969.

It is an arithmetic number, because the mean of its divisors is an integer number (25451364).

Almost surely, 2^97563539 is an apocalyptic number.

97563539 is a deficient number, since it is larger than the sum of its proper divisors (4241917).

97563539 is a wasteful number, since it uses less digits than its factorization.

97563539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241916.

The product of its digits is 765450, while the sum is 47.

The square root of 97563539 is about 9877.4257273846. The cubic root of 97563539 is about 460.3581630853.

The spelling of 97563539 in words is "ninety-seven million, five hundred sixty-three thousand, five hundred thirty-nine".