97587261 has 10 divisors (see below), whose sum is σ = 145778622. Its totient is φ = 65058120.

The previous prime is 97587227. The next prime is 97587277. The reversal of 97587261 is 16278579.

97587261 is a `hidden beast` number, since 9 + 7 + 587 + 2 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 95355225 + 2232036 = 9765^2 + 1494^2 .

It is a de Polignac number, because none of the positive numbers 2^k-97587261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97587461) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 602310 + ... + 602471.

Almost surely, 2^97587261 is an apocalyptic number.

It is an amenable number.

97587261 is a deficient number, since it is larger than the sum of its proper divisors (48191361).

97587261 is a wasteful number, since it uses less digits than its factorization.

97587261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204793 (or 1204784 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 97587261 is about 9878.6264733514. The cubic root of 97587261 is about 460.3954711872.

The spelling of 97587261 in words is "ninety-seven million, five hundred eighty-seven thousand, two hundred sixty-one".