87255505 has 12 divisors (see below), whose sum is σ = 110509812. Its totient is φ = 66129120.

The previous prime is 87255479. The next prime is 87255541. The reversal of 87255505 is 50555278.

It can be written as a sum of positive squares in 2 ways, for example, as 53231616 + 34023889 = 7296^2 + 5833^2 .

It is not a de Polignac number, because 87255505 - 2⁵ = 87255473 is a prime.

It is a super-2 number, since 2×87255505² = 15227046305610050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22366 + ... + 25975.

It is an arithmetic number, because the mean of its divisors is an integer number (9209151).

Almost surely, 2^87255505 is an apocalyptic number.

It is an amenable number.

87255505 is a deficient number, since it is larger than the sum of its proper divisors (23254307).

87255505 is a wasteful number, since it uses less digits than its factorization.

87255505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48384 (or 48365 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 37.

The square root of 87255505 is about 9341.0655173808. The cubic root of 87255505 is about 443.5381140117.

The spelling of 87255505 in words is "eighty-seven million, two hundred fifty-five thousand, five hundred five".