501872055226 has 4 divisors (see below), whose sum is σ = 752808082842. Its totient is φ = 250936027612.

The previous prime is 501872055211. The next prime is 501872055257. The reversal of 501872055226 is 622550278105.

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

It can be written as a sum of positive squares in only one way, i.e., 454107515625 + 47764539601 = 673875^2 + 218551^2 .

It is a super-2 number, since 2×501872055226² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125468013805 + ... + 125468013808.

Almost surely, 2^501872055226 is an apocalyptic number.

501872055226 is a deficient number, since it is larger than the sum of its proper divisors (250936027616).

501872055226 is a wasteful number, since it uses less digits than its factorization.

501872055226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250936027615.

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 501872055226 in words is "five hundred one billion, eight hundred seventy-two million, fifty-five thousand, two hundred twenty-six".