520149547 has 2 divisors, whose sum is σ = 520149548. Its totient is φ = 520149546.

The previous prime is 520149521. The next prime is 520149557. The reversal of 520149547 is 745941025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520149547 - 2⁷ = 520149419 is a prime.

It is not a weakly prime, because it can be changed into another prime (520149557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260074773 + 260074774.

It is an arithmetic number, because the mean of its divisors is an integer number (260074774).

Almost surely, 2^520149547 is an apocalyptic number.

520149547 is a deficient number, since it is larger than the sum of its proper divisors (1).

520149547 is an equidigital number, since it uses as much as digits as its factorization.

520149547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 520149547 is about 22806.7873011523. The cubic root of 520149547 is about 804.2222324669. Note that the first 4 decimals are identical.

The spelling of 520149547 in words is "five hundred twenty million, one hundred forty-nine thousand, five hundred forty-seven".