87057571 has 4 divisors (see below), whose sum is σ = 87642000. Its totient is φ = 86473144.

The previous prime is 87057541. The next prime is 87057613. The reversal of 87057571 is 17575078.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87057571 - 2¹¹ = 87055523 is a prime.

It is a super-3 number, since 3×87057571³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87057511) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 291991 + ... + 292288.

It is an arithmetic number, because the mean of its divisors is an integer number (21910500).

Almost surely, 2^87057571 is an apocalyptic number.

87057571 is a deficient number, since it is larger than the sum of its proper divisors (584429).

87057571 is a wasteful number, since it uses less digits than its factorization.

87057571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584428.

The product of its (nonzero) digits is 68600, while the sum is 40.

The square root of 87057571 is about 9330.4646722444. The cubic root of 87057571 is about 443.2024800214.

The spelling of 87057571 in words is "eighty-seven million, fifty-seven thousand, five hundred seventy-one".