87601121 has 2 divisors, whose sum is σ = 87601122. Its totient is φ = 87601120.

The previous prime is 87601109. The next prime is 87601177. The reversal of 87601121 is 12110678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55338721 + 32262400 = 7439^2 + 5680^2 .

It is a cyclic number.

It is not a de Polignac number, because 87601121 - 2²⁶ = 20492257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87601321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43800560 + 43800561.

It is an arithmetic number, because the mean of its divisors is an integer number (43800561).

Almost surely, 2^87601121 is an apocalyptic number.

It is an amenable number.

87601121 is a deficient number, since it is larger than the sum of its proper divisors (1).

87601121 is an equidigital number, since it uses as much as digits as its factorization.

87601121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 87601121 is about 9359.5470510063. The cubic root of 87601121 is about 444.1229554908.

Adding to 87601121 its reverse (12110678), we get a palindrome (99711799).

The spelling of 87601121 in words is "eighty-seven million, six hundred one thousand, one hundred twenty-one".