87959551 has 2 divisors, whose sum is σ = 87959552. Its totient is φ = 87959550.

The previous prime is 87959537. The next prime is 87959593. The reversal of 87959551 is 15595978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87959551 - 2⁷ = 87959423 is a prime.

It is a super-2 number, since 2×87959551² = 15473765224243202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87959495 and 87959504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87959051) 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, 43979775 + 43979776.

It is an arithmetic number, because the mean of its divisors is an integer number (43979776).

Almost surely, 2^87959551 is an apocalyptic number.

87959551 is a deficient number, since it is larger than the sum of its proper divisors (1).

87959551 is an equidigital number, since it uses as much as digits as its factorization.

87959551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 49.

The square root of 87959551 is about 9378.6753329028. The cubic root of 87959551 is about 444.7278578433.

The spelling of 87959551 in words is "eighty-seven million, nine hundred fifty-nine thousand, five hundred fifty-one".