87873551 has 2 divisors, whose sum is σ = 87873552. Its totient is φ = 87873550.

The previous prime is 87873529. The next prime is 87873571. The reversal of 87873551 is 15537878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87873551 - 2¹⁰ = 87872527 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 (87873521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43936775 + 43936776.

It is an arithmetic number, because the mean of its divisors is an integer number (43936776).

Almost surely, 2^87873551 is an apocalyptic number.

87873551 is a deficient number, since it is larger than the sum of its proper divisors (1).

87873551 is an equidigital number, since it uses as much as digits as its factorization.

87873551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235200, while the sum is 44.

The square root of 87873551 is about 9374.0893424375. The cubic root of 87873551 is about 444.5828704903.

The spelling of 87873551 in words is "eighty-seven million, eight hundred seventy-three thousand, five hundred fifty-one".