87848021 has 2 divisors, whose sum is σ = 87848022. Its totient is φ = 87848020.

The previous prime is 87847987. The next prime is 87848041. The reversal of 87848021 is 12084878.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86285521 + 1562500 = 9289^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 87848021 - 2⁶ = 87847957 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 (87848041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43924010 + 43924011.

It is an arithmetic number, because the mean of its divisors is an integer number (43924011).

Almost surely, 2^87848021 is an apocalyptic number.

It is an amenable number.

87848021 is a deficient number, since it is larger than the sum of its proper divisors (1).

87848021 is an equidigital number, since it uses as much as digits as its factorization.

87848021 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 87848021 is about 9372.7275112424. The cubic root of 87848021 is about 444.5398112690.

The spelling of 87848021 in words is "eighty-seven million, eight hundred forty-eight thousand, twenty-one".