521341078 has 4 divisors (see below), whose sum is σ = 782011620. Its totient is φ = 260670538.

The previous prime is 521341049. The next prime is 521341087. The reversal of 521341078 is 870143125.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×521341078² = 543593039220404168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130335268 + ... + 130335271.

It is an arithmetic number, because the mean of its divisors is an integer number (195502905).

Almost surely, 2^521341078 is an apocalyptic number.

521341078 is a deficient number, since it is larger than the sum of its proper divisors (260670542).

521341078 is a wasteful number, since it uses less digits than its factorization.

521341078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260670541.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 521341078 is about 22832.8946478540. The cubic root of 521341078 is about 804.8358540359.

The spelling of 521341078 in words is "five hundred twenty-one million, three hundred forty-one thousand, seventy-eight".