87489151 has 2 divisors, whose sum is σ = 87489152. Its totient is φ = 87489150.

The previous prime is 87489139. The next prime is 87489179. The reversal of 87489151 is 15198478.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87489151 - 2¹⁷ = 87358079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87489098 and 87489107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87481151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43744575 + 43744576.

It is an arithmetic number, because the mean of its divisors is an integer number (43744576).

Almost surely, 2^87489151 is an apocalyptic number.

87489151 is a deficient number, since it is larger than the sum of its proper divisors (1).

87489151 is an equidigital number, since it uses as much as digits as its factorization.

87489151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 43.

The square root of 87489151 is about 9353.5635455157. The cubic root of 87489151 is about 443.9336517881.

The spelling of 87489151 in words is "eighty-seven million, four hundred eighty-nine thousand, one hundred fifty-one".