87489550 has 24 divisors (see below), whose sum is σ = 163110096. Its totient is φ = 34914240.

The previous prime is 87489527. The next prime is 87489557. The reversal of 87489550 is 5598478.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 87489550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87489557) 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, 22554 + ... + 26146.

It is an arithmetic number, because the mean of its divisors is an integer number (6796254).

Almost surely, 2^87489550 is an apocalyptic number.

87489550 is a deficient number, since it is larger than the sum of its proper divisors (75620546).

87489550 is a wasteful number, since it uses less digits than its factorization.

87489550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4092 (or 4087 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 87489550 is about 9353.5848742608. The cubic root of 87489550 is about 443.9343266499.

The spelling of 87489550 in words is "eighty-seven million, four hundred eighty-nine thousand, five hundred fifty".