521552441 has 2 divisors, whose sum is σ = 521552442. Its totient is φ = 521552440.

The previous prime is 521552429. The next prime is 521552491. The reversal of 521552441 is 144255125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 450925225 + 70627216 = 21235^2 + 8404^2 .

It is a cyclic number.

It is not a de Polignac number, because 521552441 - 2⁶ = 521552377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (521552411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260776220 + 260776221.

It is an arithmetic number, because the mean of its divisors is an integer number (260776221).

Almost surely, 2^521552441 is an apocalyptic number.

It is an amenable number.

521552441 is a deficient number, since it is larger than the sum of its proper divisors (1).

521552441 is an equidigital number, since it uses as much as digits as its factorization.

521552441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8000, while the sum is 29.

The square root of 521552441 is about 22837.5226546138. The cubic root of 521552441 is about 804.9446053211.

The spelling of 521552441 in words is "five hundred twenty-one million, five hundred fifty-two thousand, four hundred forty-one".