87231045 has 16 divisors (see below), whose sum is σ = 152258112. Its totient is φ = 42293760.

The previous prime is 87231041. The next prime is 87231049. The reversal of 87231045 is 54013278.

It is an interprime number because it is at equal distance from previous prime (87231041) and next prime (87231049).

It is not a de Polignac number, because 87231045 - 2² = 87231041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87231041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264172 + ... + 264501.

It is an arithmetic number, because the mean of its divisors is an integer number (9516132).

Almost surely, 2^87231045 is an apocalyptic number.

It is an amenable number.

87231045 is a deficient number, since it is larger than the sum of its proper divisors (65027067).

87231045 is a wasteful number, since it uses less digits than its factorization.

87231045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528692.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 87231045 is about 9339.7561531338. The cubic root of 87231045 is about 443.4966650274.

It can be divided in two parts, 87 and 231045, that added together give a palindrome (231132).

The spelling of 87231045 in words is "eighty-seven million, two hundred thirty-one thousand, forty-five".