87905555 has 8 divisors (see below), whose sum is σ = 111691872. Its totient is φ = 66187648.

The previous prime is 87905551. The next prime is 87905561. The reversal of 87905555 is 55550978.

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 87905555 - 2² = 87905551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87905551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517007 + ... + 517176.

It is an arithmetic number, because the mean of its divisors is an integer number (13961484).

Almost surely, 2^87905555 is an apocalyptic number.

87905555 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

87905555 is a deficient number, since it is larger than the sum of its proper divisors (23786317).

87905555 is a wasteful number, since it uses less digits than its factorization.

87905555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034205.

The product of its (nonzero) digits is 315000, while the sum is 44.

The square root of 87905555 is about 9375.7962328540. The cubic root of 87905555 is about 444.6368370632.

The spelling of 87905555 in words is "eighty-seven million, nine hundred five thousand, five hundred fifty-five".