97535861 has 4 divisors (see below), whose sum is σ = 97572300. Its totient is φ = 97499424.

The previous prime is 97535819. The next prime is 97535863. The reversal of 97535861 is 16853579.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16853579 = 17 ⋅991387.

It can be written as a sum of positive squares in 2 ways, for example, as 73427761 + 24108100 = 8569^2 + 4910^2 .

It is a cyclic number.

It is not a de Polignac number, because 97535861 - 2²⁶ = 30426997 is a prime.

It is a super-2 number, since 2×97535861² = 19026488362022642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97535863) 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, 13856 + ... + 19673.

It is an arithmetic number, because the mean of its divisors is an integer number (24393075).

Almost surely, 2^97535861 is an apocalyptic number.

It is an amenable number.

97535861 is a deficient number, since it is larger than the sum of its proper divisors (36439).

97535861 is a wasteful number, since it uses less digits than its factorization.

97535861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36438.

The product of its digits is 226800, while the sum is 44.

The square root of 97535861 is about 9876.0245544450. The cubic root of 97535861 is about 460.3146256516.

The spelling of 97535861 in words is "ninety-seven million, five hundred thirty-five thousand, eight hundred sixty-one".