47021147 has 2 divisors, whose sum is σ = 47021148. Its totient is φ = 47021146.

The previous prime is 47021129. The next prime is 47021159. The reversal of 47021147 is 74112074.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47021147 - 2⁶ = 47021083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47021047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23510573 + 23510574.

It is an arithmetic number, because the mean of its divisors is an integer number (23510574).

Almost surely, 2^47021147 is an apocalyptic number.

47021147 is a deficient number, since it is larger than the sum of its proper divisors (1).

47021147 is an equidigital number, since it uses as much as digits as its factorization.

47021147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 47021147 is about 6857.1967304431. The cubic root of 47021147 is about 360.9367246112.

The spelling of 47021147 in words is "forty-seven million, twenty-one thousand, one hundred forty-seven".