538122506 has 4 divisors (see below), whose sum is σ = 807183762. Its totient is φ = 269061252.

The previous prime is 538122461. The next prime is 538122517. The reversal of 538122506 is 605221835.

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., 508908481 + 29214025 = 22559^2 + 5405^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134530625 + ... + 134530628.

Almost surely, 2^538122506 is an apocalyptic number.

538122506 is a deficient number, since it is larger than the sum of its proper divisors (269061256).

538122506 is a wasteful number, since it uses less digits than its factorization.

538122506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269061255.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 538122506 is about 23197.4676635188. The cubic root of 538122506 is about 813.3804293177.

The spelling of 538122506 in words is "five hundred thirty-eight million, one hundred twenty-two thousand, five hundred six".