53533831 has 4 divisors (see below), whose sum is σ = 57651832. Its totient is φ = 49415832.

The previous prime is 53533819. The next prime is 53533841. The reversal of 53533831 is 13833535.

53533831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53533831 is a prime.

It is a super-2 number, since 2×53533831² = 5731742123073122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53533793 and 53533802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53533801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2058981 + ... + 2059006.

It is an arithmetic number, because the mean of its divisors is an integer number (14412958).

Almost surely, 2^53533831 is an apocalyptic number.

53533831 is a deficient number, since it is larger than the sum of its proper divisors (4118001).

53533831 is a wasteful number, since it uses less digits than its factorization.

53533831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118000.

The product of its digits is 16200, while the sum is 31.

The square root of 53533831 is about 7316.6816932268. The cubic root of 53533831 is about 376.8855105257.

The spelling of 53533831 in words is "fifty-three million, five hundred thirty-three thousand, eight hundred thirty-one".