521340095 has 8 divisors (see below), whose sum is σ = 625850064. Its totient is φ = 416910784.

The previous prime is 521340073. The next prime is 521340097. The reversal of 521340095 is 590043125.

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-521340095 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521340097) 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, 4889 + ... + 32658.

It is an arithmetic number, because the mean of its divisors is an integer number (78231258).

Almost surely, 2^521340095 is an apocalyptic number.

521340095 is a deficient number, since it is larger than the sum of its proper divisors (104509969).

521340095 is a wasteful number, since it uses less digits than its factorization.

521340095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40329.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 521340095 is about 22832.8731218828. The cubic root of 521340095 is about 804.8353481904.

The spelling of 521340095 in words is "five hundred twenty-one million, three hundred forty thousand, ninety-five".