53129386 has 16 divisors (see below), whose sum is σ = 84546504. Its totient is φ = 24953344.

The previous prime is 53129347. The next prime is 53129387. The reversal of 53129386 is 68392135.

It can be written as a sum of positive squares in 4 ways, for example, as 30747025 + 22382361 = 5545^2 + 4731^2 .

It is not an unprimeable number, because it can be changed into a prime (53129387) 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, 21006 + ... + 23398.

Almost surely, 2^53129386 is an apocalyptic number.

53129386 is a deficient number, since it is larger than the sum of its proper divisors (31417118).

53129386 is a wasteful number, since it uses less digits than its factorization.

53129386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065.

The product of its digits is 38880, while the sum is 37.

The square root of 53129386 is about 7288.9907394646. The cubic root of 53129386 is about 375.9339941854.

The spelling of 53129386 in words is "fifty-three million, one hundred twenty-nine thousand, three hundred eighty-six".