87553469 has 2 divisors, whose sum is σ = 87553470. Its totient is φ = 87553468.

The previous prime is 87553447. The next prime is 87553493. The reversal of 87553469 is 96435578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59059225 + 28494244 = 7685^2 + 5338^2 .

It is a cyclic number.

It is not a de Polignac number, because 87553469 - 2¹² = 87549373 is a prime.

It is a super-2 number, since 2×87553469² = 15331219867867922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87553429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43776734 + 43776735.

It is an arithmetic number, because the mean of its divisors is an integer number (43776735).

Almost surely, 2^87553469 is an apocalyptic number.

It is an amenable number.

87553469 is a deficient number, since it is larger than the sum of its proper divisors (1).

87553469 is an equidigital number, since it uses as much as digits as its factorization.

87553469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 47.

The square root of 87553469 is about 9357.0010687185. The cubic root of 87553469 is about 444.0424116752.

The spelling of 87553469 in words is "eighty-seven million, five hundred fifty-three thousand, four hundred sixty-nine".