88172531 has 4 divisors (see below), whose sum is σ = 88191432. Its totient is φ = 88153632.

The previous prime is 88172519. The next prime is 88172569. The reversal of 88172531 is 13527188.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88172531 - 2⁶ = 88172467 is a prime.

It is a super-2 number, since 2×88172531² = 15548790445891922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 88172491 and 88172500.

It is not an unprimeable number, because it can be changed into a prime (88174531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3131 + ... + 13643.

It is an arithmetic number, because the mean of its divisors is an integer number (22047858).

Almost surely, 2^88172531 is an apocalyptic number.

88172531 is a deficient number, since it is larger than the sum of its proper divisors (18901).

88172531 is a wasteful number, since it uses less digits than its factorization.

88172531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18900.

The product of its digits is 13440, while the sum is 35.

The square root of 88172531 is about 9390.0229499187. The cubic root of 88172531 is about 445.0865143412.

The spelling of 88172531 in words is "eighty-eight million, one hundred seventy-two thousand, five hundred thirty-one".