97561422 has 80 divisors (see below), whose sum is σ = 251602560. Its totient is φ = 27678672.

The previous prime is 97561421. The next prime is 97561439. The reversal of 97561422 is 22416579.

97561422 is a `hidden beast` number, since 97 + 561 + 4 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97561421) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 257229 + ... + 257607.

It is an arithmetic number, because the mean of its divisors is an integer number (3145032).

Almost surely, 2^97561422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97561422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125801280).

97561422 is an abundant number, since it is smaller than the sum of its proper divisors (154041138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97561422 is a wasteful number, since it uses less digits than its factorization.

97561422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 618 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 97561422 is about 9877.3185632539. The cubic root of 97561422 is about 460.3548333398.

The spelling of 97561422 in words is "ninety-seven million, five hundred sixty-one thousand, four hundred twenty-two".