97886531 has 4 divisors (see below), whose sum is σ = 99347592. Its totient is φ = 96425472.

The previous prime is 97886507. The next prime is 97886539. The reversal of 97886531 is 13568879.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13568879 = 59 ⋅229981.

It is a cyclic number.

It is not a de Polignac number, because 97886531 - 2¹⁴ = 97870147 is a prime.

It is a super-2 number, since 2×97886531² = 19163545902427922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97886539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730430 + ... + 730563.

It is an arithmetic number, because the mean of its divisors is an integer number (24836898).

Almost surely, 2^97886531 is an apocalyptic number.

97886531 is a deficient number, since it is larger than the sum of its proper divisors (1461061).

97886531 is a wasteful number, since it uses less digits than its factorization.

97886531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461060.

The product of its digits is 362880, while the sum is 47.

The square root of 97886531 is about 9893.7622267770. The cubic root of 97886531 is about 460.8656211679.

The spelling of 97886531 in words is "ninety-seven million, eight hundred eighty-six thousand, five hundred thirty-one".