87542029 has 2 divisors, whose sum is σ = 87542030. Its totient is φ = 87542028.

The previous prime is 87542003. The next prime is 87542051. The reversal of 87542029 is 92024578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70526404 + 17015625 = 8398^2 + 4125^2 .

It is a cyclic number.

It is not a de Polignac number, because 87542029 - 2⁵ = 87541997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87540029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43771014 + 43771015.

It is an arithmetic number, because the mean of its divisors is an integer number (43771015).

Almost surely, 2^87542029 is an apocalyptic number.

It is an amenable number.

87542029 is a deficient number, since it is larger than the sum of its proper divisors (1).

87542029 is an equidigital number, since it uses as much as digits as its factorization.

87542029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 87542029 is about 9356.3897417754. The cubic root of 87542029 is about 444.0230708597.

The spelling of 87542029 in words is "eighty-seven million, five hundred forty-two thousand, twenty-nine".