88555421 has 4 divisors (see below), whose sum is σ = 90226332. Its totient is φ = 86884512.

The previous prime is 88555403. The next prime is 88555427. The reversal of 88555421 is 12455588.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75516100 + 13039321 = 8690^2 + 3611^2 .

It is a cyclic number.

It is not a de Polignac number, because 88555421 - 2¹⁰ = 88554397 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88555427) 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, 835376 + ... + 835481.

It is an arithmetic number, because the mean of its divisors is an integer number (22556583).

Almost surely, 2^88555421 is an apocalyptic number.

It is an amenable number.

88555421 is a deficient number, since it is larger than the sum of its proper divisors (1670911).

88555421 is a wasteful number, since it uses less digits than its factorization.

88555421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670910.

The product of its digits is 64000, while the sum is 38.

The square root of 88555421 is about 9410.3889930226. The cubic root of 88555421 is about 445.7298480593.

The spelling of 88555421 in words is "eighty-eight million, five hundred fifty-five thousand, four hundred twenty-one".