87281555 has 8 divisors (see below), whose sum is σ = 106000272. Its totient is φ = 68983648.

The previous prime is 87281549. The next prime is 87281563. The reversal of 87281555 is 55518278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87281555 - 2¹² = 87277459 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104744 + ... + 105573.

It is an arithmetic number, because the mean of its divisors is an integer number (13250034).

Almost surely, 2^87281555 is an apocalyptic number.

87281555 is a deficient number, since it is larger than the sum of its proper divisors (18718717).

87281555 is a wasteful number, since it uses less digits than its factorization.

87281555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210405.

The product of its digits is 112000, while the sum is 41.

The square root of 87281555 is about 9342.4597938659. The cubic root of 87281555 is about 443.5822488325.

The spelling of 87281555 in words is "eighty-seven million, two hundred eighty-one thousand, five hundred fifty-five".