87880547 has 2 divisors, whose sum is σ = 87880548. Its totient is φ = 87880546.

The previous prime is 87880543. The next prime is 87880549. The reversal of 87880547 is 74508878.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87880547 - 2² = 87880543 is a prime.

Together with 87880549, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87880543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43940273 + 43940274.

It is an arithmetic number, because the mean of its divisors is an integer number (43940274).

Almost surely, 2^87880547 is an apocalyptic number.

87880547 is a deficient number, since it is larger than the sum of its proper divisors (1).

87880547 is an equidigital number, since it uses as much as digits as its factorization.

87880547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 87880547 is about 9374.4624912578. The cubic root of 87880547 is about 444.5946685767.

The spelling of 87880547 in words is "eighty-seven million, eight hundred eighty thousand, five hundred forty-seven".