53303444 has 12 divisors (see below), whose sum is σ = 95556468. Its totient is φ = 26001600.

The previous prime is 53303429. The next prime is 53303461. The reversal of 53303444 is 44430335.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31494544 + 21808900 = 5612^2 + 4670^2 .

It is a super-2 number, since 2×53303444² = 5682514284522272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162347 + ... + 162674.

It is an arithmetic number, because the mean of its divisors is an integer number (7963039).

Almost surely, 2^53303444 is an apocalyptic number.

It is an amenable number.

53303444 is a deficient number, since it is larger than the sum of its proper divisors (42253024).

53303444 is a wasteful number, since it uses less digits than its factorization.

53303444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325066 (or 325064 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 53303444 is about 7300.9207638489. The cubic root of 53303444 is about 376.3440810636.

Adding to 53303444 its reverse (44430335), we get a palindrome (97733779).

The spelling of 53303444 in words is "fifty-three million, three hundred three thousand, four hundred forty-four".