88021487 has 2 divisors, whose sum is σ = 88021488. Its totient is φ = 88021486.

The previous prime is 88021457. The next prime is 88021513. The reversal of 88021487 is 78412088.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88021487 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 88021487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88021457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44010743 + 44010744.

It is an arithmetic number, because the mean of its divisors is an integer number (44010744).

Almost surely, 2^88021487 is an apocalyptic number.

88021487 is a deficient number, since it is larger than the sum of its proper divisors (1).

88021487 is an equidigital number, since it uses as much as digits as its factorization.

88021487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 88021487 is about 9381.9767106938. The cubic root of 88021487 is about 444.8322171831.

The spelling of 88021487 in words is "eighty-eight million, twenty-one thousand, four hundred eighty-seven".