53993129 has 4 divisors (see below), whose sum is σ = 54153684. Its totient is φ = 53832576.

The previous prime is 53993119. The next prime is 53993131. The reversal of 53993129 is 92139935.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92139935 = 5 ⋅18427987.

It can be written as a sum of positive squares in 2 ways, for example, as 14592400 + 39400729 = 3820^2 + 6277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53993129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53993119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79772 + ... + 80445.

It is an arithmetic number, because the mean of its divisors is an integer number (13538421).

Almost surely, 2^53993129 is an apocalyptic number.

It is an amenable number.

53993129 is a deficient number, since it is larger than the sum of its proper divisors (160555).

53993129 is a wasteful number, since it uses less digits than its factorization.

53993129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160554.

The product of its digits is 65610, while the sum is 41.

The square root of 53993129 is about 7348.0017011430. The cubic root of 53993129 is about 377.9602829597.

The spelling of 53993129 in words is "fifty-three million, nine hundred ninety-three thousand, one hundred twenty-nine".