87533955 has 12 divisors (see below), whose sum is σ = 151725600. Its totient is φ = 46684752.

The previous prime is 87533951. The next prime is 87534001. The reversal of 87533955 is 55933578.

It is not a de Polignac number, because 87533955 - 2² = 87533951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1945199 = 87533955 / (8 + 7 + 5 + 3 + 3 + 9 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 87533955.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87533951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 972555 + ... + 972644.

It is an arithmetic number, because the mean of its divisors is an integer number (12643800).

Almost surely, 2^87533955 is an apocalyptic number.

87533955 is a deficient number, since it is larger than the sum of its proper divisors (64191645).

87533955 is a wasteful number, since it uses less digits than its factorization.

87533955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945210 (or 1945207 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 87533955 is about 9355.9582619847. The cubic root of 87533955 is about 444.0094196930.

It can be divided in two parts, 87533 and 955, that added together give a palindrome (88488).

The spelling of 87533955 in words is "eighty-seven million, five hundred thirty-three thousand, nine hundred fifty-five".