87477121 has 24 divisors (see below), whose sum is σ = 99468000. Its totient is φ = 76690944.

The previous prime is 87477113. The next prime is 87477127. The reversal of 87477121 is 12177478.

It is not a de Polignac number, because 87477121 - 2³ = 87477113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87477127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 488610 + ... + 488788.

It is an arithmetic number, because the mean of its divisors is an integer number (4144500).

Almost surely, 2^87477121 is an apocalyptic number.

It is an amenable number.

87477121 is a deficient number, since it is larger than the sum of its proper divisors (11990879).

87477121 is a wasteful number, since it uses less digits than its factorization.

87477121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 304 counting only the distinct ones).

The product of its digits is 21952, while the sum is 37.

The square root of 87477121 is about 9352.9204529922. The cubic root of 87477121 is about 443.9133034875.

The spelling of 87477121 in words is "eighty-seven million, four hundred seventy-seven thousand, one hundred twenty-one".