538223517 has 24 divisors (see below), whose sum is σ = 839311200. Its totient is φ = 330393888.

The previous prime is 538223501. The next prime is 538223531. The reversal of 538223517 is 715322835.

It is a happy number.

It is not a de Polignac number, because 538223517 - 2⁴ = 538223501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538223537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43534 + ... + 54512.

It is an arithmetic number, because the mean of its divisors is an integer number (34971300).

Almost surely, 2^538223517 is an apocalyptic number.

It is an amenable number.

538223517 is a deficient number, since it is larger than the sum of its proper divisors (301087683).

538223517 is a wasteful number, since it uses less digits than its factorization.

538223517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11417 (or 11414 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 538223517 is about 23199.6447602113. The cubic root of 538223517 is about 813.4313193594.

The spelling of 538223517 in words is "five hundred thirty-eight million, two hundred twenty-three thousand, five hundred seventeen".