87876557 has 2 divisors, whose sum is σ = 87876558. Its totient is φ = 87876556.

The previous prime is 87876541. The next prime is 87876589. The reversal of 87876557 is 75567878.

87876557 is nontrivially palindromic in base 8.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59691076 + 28185481 = 7726^2 + 5309^2 .

It is a cyclic number.

It is not a de Polignac number, because 87876557 - 2⁴ = 87876541 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 87876499 and 87876508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87876527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43938278 + 43938279.

It is an arithmetic number, because the mean of its divisors is an integer number (43938279).

Almost surely, 2^87876557 is an apocalyptic number.

It is an amenable number.

87876557 is a deficient number, since it is larger than the sum of its proper divisors (1).

87876557 is an equidigital number, since it uses as much as digits as its factorization.

87876557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3292800, while the sum is 53.

The square root of 87876557 is about 9374.2496766408. The cubic root of 87876557 is about 444.5879398992.

The spelling of 87876557 in words is "eighty-seven million, eight hundred seventy-six thousand, five hundred fifty-seven".