97271861 has 4 divisors (see below), whose sum is σ = 98216352. Its totient is φ = 96327372.

The previous prime is 97271851. The next prime is 97271879. The reversal of 97271861 is 16817279.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97271861 - 2²² = 93077557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97271821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472091 + ... + 472296.

It is an arithmetic number, because the mean of its divisors is an integer number (24554088).

Almost surely, 2^97271861 is an apocalyptic number.

It is an amenable number.

97271861 is a deficient number, since it is larger than the sum of its proper divisors (944491).

97271861 is a wasteful number, since it uses less digits than its factorization.

97271861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944490.

The product of its digits is 42336, while the sum is 41.

The square root of 97271861 is about 9862.6497960741. The cubic root of 97271861 is about 459.8989396768.

The spelling of 97271861 in words is "ninety-seven million, two hundred seventy-one thousand, eight hundred sixty-one".