521952395 has 4 divisors (see below), whose sum is σ = 626342880. Its totient is φ = 417561912.

The previous prime is 521952391. The next prime is 521952413. The reversal of 521952395 is 593259125.

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

It is a cyclic number.

It is not a de Polignac number, because 521952395 - 2² = 521952391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521952391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52195235 + ... + 52195244.

It is an arithmetic number, because the mean of its divisors is an integer number (156585720).

Almost surely, 2^521952395 is an apocalyptic number.

521952395 is a deficient number, since it is larger than the sum of its proper divisors (104390485).

521952395 is a wasteful number, since it uses less digits than its factorization.

521952395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104390484.

The product of its digits is 121500, while the sum is 41.

The square root of 521952395 is about 22846.2774867154. The cubic root of 521952395 is about 805.1503107821.

The spelling of 521952395 in words is "five hundred twenty-one million, nine hundred fifty-two thousand, three hundred ninety-five".