97026221 has 4 divisors (see below), whose sum is σ = 97077372. Its totient is φ = 96975072.

The previous prime is 97026203. The next prime is 97026229. The reversal of 97026221 is 12262079.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20376196 + 76650025 = 4514^2 + 8755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97026221 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 (97026229) 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, 22616 + ... + 26561.

It is an arithmetic number, because the mean of its divisors is an integer number (24269343).

Almost surely, 2^97026221 is an apocalyptic number.

It is an amenable number.

97026221 is a deficient number, since it is larger than the sum of its proper divisors (51151).

97026221 is a wasteful number, since it uses less digits than its factorization.

97026221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51150.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 97026221 is about 9850.1888814378. The cubic root of 97026221 is about 459.5114867458.

The spelling of 97026221 in words is "ninety-seven million, twenty-six thousand, two hundred twenty-one".