521230045 has 8 divisors (see below), whose sum is σ = 714829824. Its totient is φ = 357414864.

The previous prime is 521230019. The next prime is 521230049. The reversal of 521230045 is 540032125.

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 521230045 - 2¹⁷ = 521098973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 521229998 and 521230025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521230049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7446109 + ... + 7446178.

It is an arithmetic number, because the mean of its divisors is an integer number (89353728).

Almost surely, 2^521230045 is an apocalyptic number.

It is an amenable number.

521230045 is a deficient number, since it is larger than the sum of its proper divisors (193599779).

521230045 is a wasteful number, since it uses less digits than its factorization.

521230045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14892299.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 521230045 is about 22830.4630921057. The cubic root of 521230045 is about 804.7787131430.

The spelling of 521230045 in words is "five hundred twenty-one million, two hundred thirty thousand, forty-five".