53381386 has 4 divisors (see below), whose sum is σ = 80072082. Its totient is φ = 26690692.

The previous prime is 53381353. The next prime is 53381389. The reversal of 53381386 is 68318335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68318335 = 5 ⋅13663667.

It can be written as a sum of positive squares in only one way, i.e., 48233025 + 5148361 = 6945^2 + 2269^2 .

It is not an unprimeable number, because it can be changed into a prime (53381389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13345345 + ... + 13345348.

Almost surely, 2^53381386 is an apocalyptic number.

53381386 is a deficient number, since it is larger than the sum of its proper divisors (26690696).

53381386 is a wasteful number, since it uses less digits than its factorization.

53381386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26690695.

The product of its digits is 51840, while the sum is 37.

The square root of 53381386 is about 7306.2566338721. The cubic root of 53381386 is about 376.5274258443.

It can be divided in two parts, 5338 and 1386, that added together give a square (6724 = 82²).

The spelling of 53381386 in words is "fifty-three million, three hundred eighty-one thousand, three hundred eighty-six".