88173957481 has 3 divisors (see below), whose sum is σ = 88174254423. Its totient is φ = 88173660540.

The previous prime is 88173957461. The next prime is 88173957527. The reversal of 88173957481 is 18475937188.

The square root of 88173957481 is 296941.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 64673067481 + 23500890000 = 254309^2 + 153300^2 .

It is not a de Polignac number, because 88173957481 - 2⁷ = 88173957353 is a prime.

It is a super-2 number, since 2×88173957481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88173957461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 148471 + ... + 445411.

It is an arithmetic number, because the mean of its divisors is an integer number (29391418141).

Almost surely, 2^88173957481 is an apocalyptic number.

88173957481 is the 296941-st square number.

88173957481 is the 148471-st centered octagonal number.

It is an amenable number.

88173957481 is a deficient number, since it is larger than the sum of its proper divisors (296942).

88173957481 is an frugal number, since it uses more digits than its factorization.

88173957481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593882 (or 296941 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 61.

The spelling of 88173957481 in words is "eighty-eight billion, one hundred seventy-three million, nine hundred fifty-seven thousand, four hundred eighty-one".