53538669 has 12 divisors (see below), whose sum is σ = 80000700. Its totient is φ = 34461504.

The previous prime is 53538659. The next prime is 53538671. The reversal of 53538669 is 96683535.

53538669 is a `hidden beast` number, since 53 + 538 + 6 + 69 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12744900 + 40793769 = 3570^2 + 6387^2 .

It is not a de Polignac number, because 53538669 - 2¹⁵ = 53505901 is a prime.

It is a super-2 number, since 2×53538669² = 5732778156583122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53538659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102304 + ... + 102825.

It is an arithmetic number, because the mean of its divisors is an integer number (6666725).

Almost surely, 2^53538669 is an apocalyptic number.

It is an amenable number.

53538669 is a deficient number, since it is larger than the sum of its proper divisors (26462031).

53538669 is a wasteful number, since it uses less digits than its factorization.

53538669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205164 (or 205161 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 53538669 is about 7317.0123001127. The cubic root of 53538669 is about 376.8968635782.

It can be divided in two parts, 535 and 38669, that added together give a square (39204 = 198²).

The spelling of 53538669 in words is "fifty-three million, five hundred thirty-eight thousand, six hundred sixty-nine".