87253535477 has 2 divisors, whose sum is σ = 87253535478. Its totient is φ = 87253535476.

The previous prime is 87253535443. The next prime is 87253535543. The reversal of 87253535477 is 77453535278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67857124036 + 19396411441 = 260494^2 + 139271^2 .

It is a cyclic number.

It is not a de Polignac number, because 87253535477 - 2¹⁸ = 87253273333 is a prime.

It is a super-2 number, since 2×87253535477² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87253535417) 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, 43626767738 + 43626767739.

It is an arithmetic number, because the mean of its divisors is an integer number (43626767739).

Almost surely, 2^87253535477 is an apocalyptic number.

It is an amenable number.

87253535477 is a deficient number, since it is larger than the sum of its proper divisors (1).

87253535477 is an equidigital number, since it uses as much as digits as its factorization.

87253535477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696000, while the sum is 56.

The spelling of 87253535477 in words is "eighty-seven billion, two hundred fifty-three million, five hundred thirty-five thousand, four hundred seventy-seven".