87545629 has 2 divisors, whose sum is σ = 87545630. Its totient is φ = 87545628.

The previous prime is 87545621. The next prime is 87545677. The reversal of 87545629 is 92654578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81180100 + 6365529 = 9010^2 + 2523^2 .

It is a cyclic number.

It is not a de Polignac number, because 87545629 - 2³ = 87545621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87545621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43772814 + 43772815.

It is an arithmetic number, because the mean of its divisors is an integer number (43772815).

Almost surely, 2^87545629 is an apocalyptic number.

It is an amenable number.

87545629 is a deficient number, since it is larger than the sum of its proper divisors (1).

87545629 is an equidigital number, since it uses as much as digits as its factorization.

87545629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 46.

The square root of 87545629 is about 9356.5821216938. The cubic root of 87545629 is about 444.0291573120.

The spelling of 87545629 in words is "eighty-seven million, five hundred forty-five thousand, six hundred twenty-nine".