97650121 has 4 divisors (see below), whose sum is σ = 97672644. Its totient is φ = 97627600.

The previous prime is 97650079. The next prime is 97650127. The reversal of 97650121 is 12105679.

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 45968400 + 51681721 = 6780^2 + 7189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97650121 is a prime.

It is a super-2 number, since 2×97650121² = 19071092262629282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97650127) 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, 2470 + ... + 14191.

It is an arithmetic number, because the mean of its divisors is an integer number (24418161).

Almost surely, 2^97650121 is an apocalyptic number.

It is an amenable number.

97650121 is a deficient number, since it is larger than the sum of its proper divisors (22523).

97650121 is a wasteful number, since it uses less digits than its factorization.

97650121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22522.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 97650121 is about 9881.8075775639. The cubic root of 97650121 is about 460.4943032388.

The spelling of 97650121 in words is "ninety-seven million, six hundred fifty thousand, one hundred twenty-one".