87571433 has 4 divisors (see below), whose sum is σ = 87702228. Its totient is φ = 87440640.

The previous prime is 87571409. The next prime is 87571439. The reversal of 87571433 is 33417578.

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 54715609 + 32855824 = 7397^2 + 5732^2 .

It is a cyclic number.

It is not a de Polignac number, because 87571433 - 2¹⁰ = 87570409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87571439) 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, 64388 + ... + 65733.

It is an arithmetic number, because the mean of its divisors is an integer number (21925557).

Almost surely, 2^87571433 is an apocalyptic number.

It is an amenable number.

87571433 is a deficient number, since it is larger than the sum of its proper divisors (130795).

87571433 is a wasteful number, since it uses less digits than its factorization.

87571433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130794.

The product of its digits is 70560, while the sum is 38.

The square root of 87571433 is about 9357.9609424276. The cubic root of 87571433 is about 444.0727787658.

The spelling of 87571433 in words is "eighty-seven million, five hundred seventy-one thousand, four hundred thirty-three".