53444531 has 4 divisors (see below), whose sum is σ = 61079472. Its totient is φ = 45809592.

The previous prime is 53444519. The next prime is 53444533. The reversal of 53444531 is 13544435.

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-53444531 is a prime.

It is a super-2 number, since 2×53444531² = 5712635787619922, 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 = 53444494 and 53444503.

It is not an unprimeable number, because it can be changed into a prime (53444533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817460 + ... + 3817473.

It is an arithmetic number, because the mean of its divisors is an integer number (15269868).

Almost surely, 2^53444531 is an apocalyptic number.

53444531 is a deficient number, since it is larger than the sum of its proper divisors (7634941).

53444531 is an equidigital number, since it uses as much as digits as its factorization.

53444531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634940.

The product of its digits is 14400, while the sum is 29.

The square root of 53444531 is about 7310.5766530418. The cubic root of 53444531 is about 376.6758324794.

Adding to 53444531 its reverse (13544435), we get a palindrome (66988966).

The spelling of 53444531 in words is "fifty-three million, four hundred forty-four thousand, five hundred thirty-one".