87526729 has 2 divisors, whose sum is σ = 87526730. Its totient is φ = 87526728.

The previous prime is 87526721. The next prime is 87526739. The reversal of 87526729 is 92762578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86918329 + 608400 = 9323^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 87526729 - 2³ = 87526721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87526721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43763364 + 43763365.

It is an arithmetic number, because the mean of its divisors is an integer number (43763365).

Almost surely, 2^87526729 is an apocalyptic number.

It is an amenable number.

87526729 is a deficient number, since it is larger than the sum of its proper divisors (1).

87526729 is an equidigital number, since it uses as much as digits as its factorization.

87526729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 46.

The square root of 87526729 is about 9355.5720829888. The cubic root of 87526729 is about 443.9972015758.

The spelling of 87526729 in words is "eighty-seven million, five hundred twenty-six thousand, seven hundred twenty-nine".