87429571 has 2 divisors, whose sum is σ = 87429572. Its totient is φ = 87429570.

The previous prime is 87429547. The next prime is 87429599. The reversal of 87429571 is 17592478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87429571 - 2⁷ = 87429443 is a prime.

It is not a weakly prime, because it can be changed into another prime (87429271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43714785 + 43714786.

It is an arithmetic number, because the mean of its divisors is an integer number (43714786).

Almost surely, 2^87429571 is an apocalyptic number.

87429571 is a deficient number, since it is larger than the sum of its proper divisors (1).

87429571 is an equidigital number, since it uses as much as digits as its factorization.

87429571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 43.

The square root of 87429571 is about 9350.3781206965. The cubic root of 87429571 is about 443.8328561543.

The spelling of 87429571 in words is "eighty-seven million, four hundred twenty-nine thousand, five hundred seventy-one".