87553422 has 72 divisors (see below), whose sum is σ = 212252040. Its totient is φ = 26056800.

The previous prime is 87553391. The next prime is 87553423. The reversal of 87553422 is 22435578.

87553422 is a `hidden beast` number, since 87 + 553 + 4 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87553423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 132529 + ... + 133187.

It is an arithmetic number, because the mean of its divisors is an integer number (2947945).

Almost surely, 2^87553422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87553422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106126020).

87553422 is an abundant number, since it is smaller than the sum of its proper divisors (124698618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87553422 is a wasteful number, since it uses less digits than its factorization.

87553422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 736 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 87553422 is about 9356.9985572298. The cubic root of 87553422 is about 444.0423322190.

The spelling of 87553422 in words is "eighty-seven million, five hundred fifty-three thousand, four hundred twenty-two".