87557911 has 8 divisors (see below), whose sum is σ = 100831104. Its totient is φ = 74475960.

The previous prime is 87557881. The next prime is 87557927. The reversal of 87557911 is 11975578.

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 87557911 - 2⁷ = 87557783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87557971) 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, 46825 + ... + 48658.

It is an arithmetic number, because the mean of its divisors is an integer number (12603888).

Almost surely, 2^87557911 is an apocalyptic number.

87557911 is a deficient number, since it is larger than the sum of its proper divisors (13273193).

87557911 is a wasteful number, since it uses less digits than its factorization.

87557911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95621.

The product of its digits is 88200, while the sum is 43.

The square root of 87557911 is about 9357.2384280834. The cubic root of 87557911 is about 444.0499210027.

It can be divided in two parts, 875579 and 11, that multiplied together give a palindrome (9631369).

The spelling of 87557911 in words is "eighty-seven million, five hundred fifty-seven thousand, nine hundred eleven".