88075921 has 4 divisors (see below), whose sum is σ = 88094692. Its totient is φ = 88057152.

The previous prime is 88075907. The next prime is 88075927. The reversal of 88075921 is 12957088.

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 2 ways, for example, as 74304400 + 13771521 = 8620^2 + 3711^2 .

It is a cyclic number.

It is not a de Polignac number, because 88075921 - 2¹³ = 88067729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88075927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4621 + ... + 14053.

It is an arithmetic number, because the mean of its divisors is an integer number (22023673).

Almost surely, 2^88075921 is an apocalyptic number.

It is an amenable number.

88075921 is a deficient number, since it is larger than the sum of its proper divisors (18771).

88075921 is an equidigital number, since it uses as much as digits as its factorization.

88075921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18770.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 88075921 is about 9384.8772501296. The cubic root of 88075921 is about 444.9238955827.

The spelling of 88075921 in words is "eighty-eight million, seventy-five thousand, nine hundred twenty-one".