50926620691521 has 63 divisors (see below), whose sum is σ = 77069639459059. Its totient is φ = 33636241662912.

The previous prime is 50926620691501. The next prime is 50926620691537. The reversal of 50926620691521 is 12519602662905.

The square root of 50926620691521 is 7136289.

It is a perfect power (a square), and thus also a powerful number.

50926620691521 is a `hidden beast` number, since 5 + 0 + 9 + 2 + 6 + 6 + 20 + 6 + 91 + 521 = 666.

It can be written as a sum of positive squares in only one way, i.e., 897367817025 + 50029252874496 = 947295^2 + 7073136^2 .

It is not a de Polignac number, because 50926620691521 - 2⁷ = 50926620691393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50926620691501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 21772816570 + ... + 21772818908.

Almost surely, 2^{50926620691521} is an apocalyptic number.

50926620691521 is the 7136289-th square number.

50926620691521 is the 3568145-th centered octagonal number.

It is an amenable number.

50926620691521 is a deficient number, since it is larger than the sum of its proper divisors (26143018767538).

50926620691521 is an frugal number, since it uses more digits than its factorization.

50926620691521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4922 (or 2455 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 50926620691521 in words is "fifty trillion, nine hundred twenty-six billion, six hundred twenty million, six hundred ninety-one thousand, five hundred twenty-one".