521073471 has 8 divisors (see below), whose sum is σ = 698292144. Its totient is φ = 345618560.

The previous prime is 521073457. The next prime is 521073481. The reversal of 521073471 is 174370125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521073471 - 2⁵ = 521073439 is a prime.

It is a super-3 number, since 3×521073471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521073401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440250 + ... + 441431.

It is an arithmetic number, because the mean of its divisors is an integer number (87286518).

Almost surely, 2^521073471 is an apocalyptic number.

521073471 is a deficient number, since it is larger than the sum of its proper divisors (177218673).

521073471 is a wasteful number, since it uses less digits than its factorization.

521073471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881881.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 521073471 is about 22827.0337757668. The cubic root of 521073471 is about 804.6981217018.

The spelling of 521073471 in words is "five hundred twenty-one million, seventy-three thousand, four hundred seventy-one".