87257105 has 16 divisors (see below), whose sum is σ = 115389120. Its totient is φ = 62935488.

The previous prime is 87257099. The next prime is 87257117. The reversal of 87257105 is 50175278.

It is not a de Polignac number, because 87257105 - 2⁶ = 87257041 is a prime.

It is a super-2 number, since 2×87257105² = 15227604745962050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12815 + ... + 18404.

It is an arithmetic number, because the mean of its divisors is an integer number (7211820).

Almost surely, 2^87257105 is an apocalyptic number.

It is an amenable number.

87257105 is a deficient number, since it is larger than the sum of its proper divisors (28132015).

87257105 is a wasteful number, since it uses less digits than its factorization.

87257105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31280.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 87257105 is about 9341.1511603228. The cubic root of 87257105 is about 443.5408250408.

The spelling of 87257105 in words is "eighty-seven million, two hundred fifty-seven thousand, one hundred five".