97775541 has 6 divisors (see below), whose sum is σ = 141231350. Its totient is φ = 65183688.

The previous prime is 97775533. The next prime is 97775627. The reversal of 97775541 is 14557779.

97775541 is a `hidden beast` number, since 97 + 7 + 7 + 554 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 81974916 + 15800625 = 9054^2 + 3975^2 .

It is not a de Polignac number, because 97775541 - 2³ = 97775533 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97775521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5431966 + ... + 5431983.

Almost surely, 2^97775541 is an apocalyptic number.

It is an amenable number.

97775541 is a deficient number, since it is larger than the sum of its proper divisors (43455809).

97775541 is a wasteful number, since it uses less digits than its factorization.

97775541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10863955 (or 10863952 counting only the distinct ones).

The product of its digits is 308700, while the sum is 45.

The square root of 97775541 is about 9888.1515461688. The cubic root of 97775541 is about 460.6913690010.

The spelling of 97775541 in words is "ninety-seven million, seven hundred seventy-five thousand, five hundred forty-one".