86522121 has 16 divisors (see below), whose sum is σ = 146492800. Its totient is φ = 49441104.

The previous prime is 86522119. The next prime is 86522131. The reversal of 86522121 is 12122568.

It is a happy number.

86522121 is a `hidden beast` number, since 8 + 652 + 2 + 1 + 2 + 1 = 666.

It is not a de Polignac number, because 86522121 - 2¹ = 86522119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86522101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228706 + ... + 229083.

It is an arithmetic number, because the mean of its divisors is an integer number (9155800).

Almost surely, 2^86522121 is an apocalyptic number.

It is an amenable number.

86522121 is a deficient number, since it is larger than the sum of its proper divisors (59970679).

86522121 is a wasteful number, since it uses less digits than its factorization.

86522121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457805 (or 457799 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 86522121 is about 9301.7267751746. The cubic root of 86522121 is about 442.2919677116.

Adding to 86522121 its reverse (12122568), we get a palindrome (98644689).

The spelling of 86522121 in words is "eighty-six million, five hundred twenty-two thousand, one hundred twenty-one".