53111444 has 6 divisors (see below), whose sum is σ = 92945034. Its totient is φ = 26555720.

The previous prime is 53111437. The next prime is 53111453. The reversal of 53111444 is 44411135.

It can be written as a sum of positive squares in only one way, i.e., 46403344 + 6708100 = 6812^2 + 2590^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6638927 + ... + 6638934.

It is an arithmetic number, because the mean of its divisors is an integer number (15490839).

Almost surely, 2^53111444 is an apocalyptic number.

It is an amenable number.

53111444 is a deficient number, since it is larger than the sum of its proper divisors (39833590).

53111444 is a wasteful number, since it uses less digits than its factorization.

53111444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13277865 (or 13277863 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 53111444 is about 7287.7598752978. The cubic root of 53111444 is about 375.8916712975.

Adding to 53111444 its reverse (44411135), we get a palindrome (97522579).

The spelling of 53111444 in words is "fifty-three million, one hundred eleven thousand, four hundred forty-four".