88619521 has 8 divisors (see below), whose sum is σ = 94763304. Its totient is φ = 82579200.

The previous prime is 88619501. The next prime is 88619537. The reversal of 88619521 is 12591688.

It can be written as a sum of positive squares in 4 ways, for example, as 42107121 + 46512400 = 6489^2 + 6820^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-88619521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88619501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24090 + ... + 27523.

It is an arithmetic number, because the mean of its divisors is an integer number (11845413).

Almost surely, 2^88619521 is an apocalyptic number.

It is an amenable number.

88619521 is a deficient number, since it is larger than the sum of its proper divisors (6143783).

88619521 is a wasteful number, since it uses less digits than its factorization.

88619521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51731.

The product of its digits is 34560, while the sum is 40.

The square root of 88619521 is about 9413.7941872552. The cubic root of 88619521 is about 445.8373678928.

The spelling of 88619521 in words is "eighty-eight million, six hundred nineteen thousand, five hundred twenty-one".