52217147 has 2 divisors, whose sum is σ = 52217148. Its totient is φ = 52217146.

The previous prime is 52217131. The next prime is 52217171. The reversal of 52217147 is 74171225.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52217147 - 2⁴ = 52217131 is a prime.

It is not a weakly prime, because it can be changed into another prime (52217747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26108573 + 26108574.

It is an arithmetic number, because the mean of its divisors is an integer number (26108574).

Almost surely, 2^52217147 is an apocalyptic number.

52217147 is a deficient number, since it is larger than the sum of its proper divisors (1).

52217147 is an equidigital number, since it uses as much as digits as its factorization.

52217147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3920, while the sum is 29.

The square root of 52217147 is about 7226.1433005442. The cubic root of 52217147 is about 373.7699477428.

The spelling of 52217147 in words is "fifty-two million, two hundred seventeen thousand, one hundred forty-seven".