88601581 has 4 divisors (see below), whose sum is σ = 89723200. Its totient is φ = 87479964.

The previous prime is 88601573. The next prime is 88601593. The reversal of 88601581 is 18510688.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88601581 - 2³ = 88601573 is a prime.

It is a super-2 number, since 2×88601581² = 15700480311399122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88601581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88601561) 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, 560691 + ... + 560848.

It is an arithmetic number, because the mean of its divisors is an integer number (22430800).

Almost surely, 2^88601581 is an apocalyptic number.

It is an amenable number.

88601581 is a deficient number, since it is larger than the sum of its proper divisors (1121619).

88601581 is a wasteful number, since it uses less digits than its factorization.

88601581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121618.

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 88601581 is about 9412.8412819934. The cubic root of 88601581 is about 445.8072809846.

The spelling of 88601581 in words is "eighty-eight million, six hundred one thousand, five hundred eighty-one".