471072521 has 2 divisors, whose sum is σ = 471072522. Its totient is φ = 471072520.

The previous prime is 471072509. The next prime is 471072523. The reversal of 471072521 is 125270174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 369062521 + 102010000 = 19211^2 + 10100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-471072521 is a prime.

Together with 471072523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (471072523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235536260 + 235536261.

It is an arithmetic number, because the mean of its divisors is an integer number (235536261).

Almost surely, 2^471072521 is an apocalyptic number.

It is an amenable number.

471072521 is a deficient number, since it is larger than the sum of its proper divisors (1).

471072521 is an equidigital number, since it uses as much as digits as its factorization.

471072521 is an evil number, because the sum of its binary digits is even.

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

The square root of 471072521 is about 21704.2051455473. The cubic root of 471072521 is about 778.0889667911.

The spelling of 471072521 in words is "four hundred seventy-one million, seventy-two thousand, five hundred twenty-one".