97061021 has 4 divisors (see below), whose sum is σ = 97102044. Its totient is φ = 97020000.

The previous prime is 97060979. The next prime is 97061023. The reversal of 97061021 is 12016079.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12016079 = 2777 ⋅4327.

It can be written as a sum of positive squares in 2 ways, for example, as 26265625 + 70795396 = 5125^2 + 8414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97061021 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 (97061023) 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, 16730 + ... + 21771.

It is an arithmetic number, because the mean of its divisors is an integer number (24275511).

Almost surely, 2^97061021 is an apocalyptic number.

It is an amenable number.

97061021 is a deficient number, since it is larger than the sum of its proper divisors (41023).

97061021 is a wasteful number, since it uses less digits than its factorization.

97061021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41022.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 97061021 is about 9851.9551866622. The cubic root of 97061021 is about 459.5664172176.

The spelling of 97061021 in words is "ninety-seven million, sixty-one thousand, twenty-one".