87445452 has 48 divisors (see below), whose sum is σ = 210597632. Its totient is φ = 28226880.

The previous prime is 87445441. The next prime is 87445453. The reversal of 87445452 is 25454478.

It is a self number, because there is not a number n which added to its sum of digits gives 87445452.

It is not an unprimeable number, because it can be changed into a prime (87445453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48153 + ... + 49935.

Almost surely, 2^87445452 is an apocalyptic number.

It is an amenable number.

87445452 is an abundant number, since it is smaller than the sum of its proper divisors (123152180).

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

87445452 is a wasteful number, since it uses less digits than its factorization.

87445452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918 (or 1916 counting only the distinct ones).

The product of its digits is 179200, while the sum is 39.

The square root of 87445452 is about 9351.2272991303. The cubic root of 87445452 is about 443.8597276227.

It can be divided in two parts, 8744 and 5452, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 87445452 in words is "eighty-seven million, four hundred forty-five thousand, four hundred fifty-two".