521373049 has 8 divisors (see below), whose sum is σ = 545852160. Its totient is φ = 497327376.

The previous prime is 521373043. The next prime is 521373071. The reversal of 521373049 is 940373125.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521373049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521373043) 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, 105897 + ... + 110710.

It is an arithmetic number, because the mean of its divisors is an integer number (68231520).

Almost surely, 2^521373049 is an apocalyptic number.

It is an amenable number.

521373049 is a deficient number, since it is larger than the sum of its proper divisors (24479111).

521373049 is a wasteful number, since it uses less digits than its factorization.

521373049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216719.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 521373049 is about 22833.5947454622. The cubic root of 521373049 is about 804.8523057616.

The spelling of 521373049 in words is "five hundred twenty-one million, three hundred seventy-three thousand, forty-nine".