97561441 has 4 divisors (see below), whose sum is σ = 97950384. Its totient is φ = 97172500.

The previous prime is 97561439. The next prime is 97561493. The reversal of 97561441 is 14416579.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14416579 = 2861 ⋅5039.

It is a cyclic number.

It is not a de Polignac number, because 97561441 - 2¹ = 97561439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97561441.

It is not an unprimeable number, because it can be changed into a prime (97561411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194095 + ... + 194596.

It is an arithmetic number, because the mean of its divisors is an integer number (24487596).

Almost surely, 2^97561441 is an apocalyptic number.

It is an amenable number.

97561441 is a deficient number, since it is larger than the sum of its proper divisors (388943).

97561441 is a wasteful number, since it uses less digits than its factorization.

97561441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388942.

The product of its digits is 30240, while the sum is 37.

The square root of 97561441 is about 9877.3195250533. The cubic root of 97561441 is about 460.3548632243.

The spelling of 97561441 in words is "ninety-seven million, five hundred sixty-one thousand, four hundred forty-one".