538318553 has 8 divisors (see below), whose sum is σ = 543649128. Its totient is φ = 532998144.

The previous prime is 538318541. The next prime is 538318559. The reversal of 538318553 is 355813835.

It can be written as a sum of positive squares in 4 ways, for example, as 14961424 + 523357129 = 3868^2 + 22877^2 .

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 538318553 - 2⁶ = 538318489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 538318553.

It is not an unprimeable number, because it can be changed into a prime (538318559) 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, 144725 + ... + 148397.

It is an arithmetic number, because the mean of its divisors is an integer number (67956141).

Almost surely, 2^538318553 is an apocalyptic number.

It is an amenable number.

538318553 is a deficient number, since it is larger than the sum of its proper divisors (5330575).

538318553 is a wasteful number, since it uses less digits than its factorization.

538318553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083.

The product of its digits is 216000, while the sum is 41.

The square root of 538318553 is about 23201.6928908216. The cubic root of 538318553 is about 813.4791933417.

The spelling of 538318553 in words is "five hundred thirty-eight million, three hundred eighteen thousand, five hundred fifty-three".