47885021 has 2 divisors, whose sum is σ = 47885022. Its totient is φ = 47885020.

The previous prime is 47884979. The next prime is 47885029. The reversal of 47885021 is 12058874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29822521 + 18062500 = 5461^2 + 4250^2 .

It is a cyclic number.

It is not a de Polignac number, because 47885021 - 2⁶ = 47884957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47885029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23942510 + 23942511.

It is an arithmetic number, because the mean of its divisors is an integer number (23942511).

Almost surely, 2^47885021 is an apocalyptic number.

It is an amenable number.

47885021 is a deficient number, since it is larger than the sum of its proper divisors (1).

47885021 is an equidigital number, since it uses as much as digits as its factorization.

47885021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 47885021 is about 6919.9003605543. The cubic root of 47885021 is about 363.1337050179.

The spelling of 47885021 in words is "forty-seven million, eight hundred eighty-five thousand, twenty-one".