87475542 has 64 divisors (see below), whose sum is σ = 225676800. Its totient is φ = 21934080.

The previous prime is 87475537. The next prime is 87475543. The reversal of 87475542 is 24557478.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 87475494 and 87475503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87475543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10134 + ... + 16662.

It is an arithmetic number, because the mean of its divisors is an integer number (3526200).

Almost surely, 2^87475542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87475542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112838400).

87475542 is an abundant number, since it is smaller than the sum of its proper divisors (138201258).

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

87475542 is a wasteful number, since it uses less digits than its factorization.

87475542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6581.

The product of its digits is 313600, while the sum is 42.

The square root of 87475542 is about 9352.8360404746. The cubic root of 87475542 is about 443.9106325289.

The spelling of 87475542 in words is "eighty-seven million, four hundred seventy-five thousand, five hundred forty-two".