521419145 has 8 divisors (see below), whose sum is σ = 673834056. Its totient is φ = 385047936.

The previous prime is 521419127. The next prime is 521419183. The reversal of 521419145 is 541914125.

It can be written as a sum of positive squares in 4 ways, for example, as 32478601 + 488940544 = 5699^2 + 22112^2 .

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

It is not a de Polignac number, because 521419145 - 2²⁶ = 454310281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4010852 + ... + 4010981.

It is an arithmetic number, because the mean of its divisors is an integer number (84229257).

Almost surely, 2^521419145 is an apocalyptic number.

It is an amenable number.

521419145 is a deficient number, since it is larger than the sum of its proper divisors (152414911).

521419145 is a wasteful number, since it uses less digits than its factorization.

521419145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8021851.

The product of its digits is 7200, while the sum is 32.

The square root of 521419145 is about 22834.6041130561. The cubic root of 521419145 is about 804.8760247849.

The spelling of 521419145 in words is "five hundred twenty-one million, four hundred nineteen thousand, one hundred forty-five".