516622397 has 8 divisors (see below), whose sum is σ = 519815640. Its totient is φ = 513437760.

The previous prime is 516622361. The next prime is 516622399. The reversal of 516622397 is 793226615.

It can be written as a sum of positive squares in 4 ways, for example, as 402965476 + 113656921 = 20074^2 + 10661^2 .

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 516622397 - 2¹² = 516618301 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 (516622399) 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, 149663 + ... + 153075.

It is an arithmetic number, because the mean of its divisors is an integer number (64976955).

Almost surely, 2^516622397 is an apocalyptic number.

It is an amenable number.

516622397 is a deficient number, since it is larger than the sum of its proper divisors (3193243).

516622397 is a wasteful number, since it uses less digits than its factorization.

516622397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4303.

The product of its digits is 136080, while the sum is 41.

The square root of 516622397 is about 22729.3290046143. The cubic root of 516622397 is about 802.4002894978.

The spelling of 516622397 in words is "five hundred sixteen million, six hundred twenty-two thousand, three hundred ninety-seven".