87352813 has 2 divisors, whose sum is σ = 87352814. Its totient is φ = 87352812.

The previous prime is 87352807. The next prime is 87352847. The reversal of 87352813 is 31825378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81486729 + 5866084 = 9027^2 + 2422^2 .

It is a cyclic number.

It is not a de Polignac number, because 87352813 - 2²¹ = 85255661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87352883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43676406 + 43676407.

It is an arithmetic number, because the mean of its divisors is an integer number (43676407).

Almost surely, 2^87352813 is an apocalyptic number.

It is an amenable number.

87352813 is a deficient number, since it is larger than the sum of its proper divisors (1).

87352813 is an equidigital number, since it uses as much as digits as its factorization.

87352813 is an evil number, because the sum of its binary digits is even.

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

The square root of 87352813 is about 9346.2726795231. The cubic root of 87352813 is about 443.7029317795.

The spelling of 87352813 in words is "eighty-seven million, three hundred fifty-two thousand, eight hundred thirteen".