87353549 has 2 divisors, whose sum is σ = 87353550. Its totient is φ = 87353548.

The previous prime is 87353527. The next prime is 87353561. The reversal of 87353549 is 94535378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62173225 + 25180324 = 7885^2 + 5018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87353549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87353509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43676774 + 43676775.

It is an arithmetic number, because the mean of its divisors is an integer number (43676775).

Almost surely, 2^87353549 is an apocalyptic number.

It is an amenable number.

87353549 is a deficient number, since it is larger than the sum of its proper divisors (1).

87353549 is an equidigital number, since it uses as much as digits as its factorization.

87353549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The square root of 87353549 is about 9346.3120534251. The cubic root of 87353549 is about 443.7041779307.

The spelling of 87353549 in words is "eighty-seven million, three hundred fifty-three thousand, five hundred forty-nine".