97859481 has 16 divisors (see below), whose sum is σ = 137586240. Its totient is φ = 61698240.

The previous prime is 97859471. The next prime is 97859491. The reversal of 97859481 is 18495879.

It is an interprime number because it is at equal distance from previous prime (97859471) and next prime (97859491).

It is not a de Polignac number, because 97859481 - 2⁶ = 97859417 is a prime.

It is a super-2 number, since 2×97859481² = 19152956043178722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97859401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42951 + ... + 45171.

It is an arithmetic number, because the mean of its divisors is an integer number (8599140).

Almost surely, 2^97859481 is an apocalyptic number.

97859481 is the 6257-th centered pentagonal number.

It is an amenable number.

97859481 is a deficient number, since it is larger than the sum of its proper divisors (39726759).

97859481 is a wasteful number, since it uses less digits than its factorization.

97859481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016.

The product of its digits is 725760, while the sum is 51.

The square root of 97859481 is about 9892.3951093757. The cubic root of 97859481 is about 460.8231653318.

The spelling of 97859481 in words is "ninety-seven million, eight hundred fifty-nine thousand, four hundred eighty-one".