97550577 has 12 divisors (see below), whose sum is σ = 145765620. Its totient is φ = 62791008.

The previous prime is 97550569. The next prime is 97550587. The reversal of 97550577 is 77505579.

97550577 is a `hidden beast` number, since 9 + 75 + 5 + 0 + 577 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 32764176 + 64786401 = 5724^2 + 8049^2 .

It is not a de Polignac number, because 97550577 - 2³ = 97550569 is a prime.

It is a super-2 number, since 2×97550577² = 19032230146065858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97550507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186618 + ... + 187139.

It is an arithmetic number, because the mean of its divisors is an integer number (12147135).

Almost surely, 2^97550577 is an apocalyptic number.

It is an amenable number.

97550577 is a deficient number, since it is larger than the sum of its proper divisors (48215043).

97550577 is a wasteful number, since it uses less digits than its factorization.

97550577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373792 (or 373789 counting only the distinct ones).

The product of its (nonzero) digits is 385875, while the sum is 45.

The square root of 97550577 is about 9876.7695629695. The cubic root of 97550577 is about 460.3377749128.

The spelling of 97550577 in words is "ninety-seven million, five hundred fifty thousand, five hundred seventy-seven".