88162561 has 4 divisors (see below), whose sum is σ = 93348612. Its totient is φ = 82976512.

The previous prime is 88162537. The next prime is 88162573. The reversal of 88162561 is 16526188.

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 63600625 + 24561936 = 7975^2 + 4956^2 .

It is a cyclic number.

It is not a de Polignac number, because 88162561 - 2¹³ = 88154369 is a prime.

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 88162561.

It is not an unprimeable number, because it can be changed into a prime (88162531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2593000 + ... + 2593033.

It is an arithmetic number, because the mean of its divisors is an integer number (23337153).

Almost surely, 2^88162561 is an apocalyptic number.

It is an amenable number.

88162561 is a deficient number, since it is larger than the sum of its proper divisors (5186051).

88162561 is a wasteful number, since it uses less digits than its factorization.

88162561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5186050.

The product of its digits is 23040, while the sum is 37.

The square root of 88162561 is about 9389.4920522891. The cubic root of 88162561 is about 445.0697378396.

The spelling of 88162561 in words is "eighty-eight million, one hundred sixty-two thousand, five hundred sixty-one".