53638903 has 4 divisors (see below), whose sum is σ = 53654440. Its totient is φ = 53623368.

The previous prime is 53638901. The next prime is 53638909. The reversal of 53638903 is 30983635.

53638903 is a nontrivial binomial coefficient, being equal to C(10358, 2).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30983635 = 5 ⋅6196727.

It is a 3-Lehmer number, since φ(53638903) divides (53638903-1)³.

It is a cyclic number.

It is not a de Polignac number, because 53638903 - 2¹ = 53638901 is a prime.

It is a deceptive number, since it divides R_53638902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53638901) 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, 1 + ... + 10357.

It is an arithmetic number, because the mean of its divisors is an integer number (13413610).

Almost surely, 2^53638903 is an apocalyptic number.

53638903 is the 10357-th triangular number and also the 5179-th hexagonal number.

53638903 is the 3453-rd centered nonagonal number.

53638903 is a deficient number, since it is larger than the sum of its proper divisors (15537).

53638903 is a wasteful number, since it uses less digits than its factorization.

53638903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15536.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 53638903 is about 7323.8584776059. The cubic root of 53638903 is about 377.1319231452.

The spelling of 53638903 in words is "fifty-three million, six hundred thirty-eight thousand, nine hundred three".