53507144 has 8 divisors (see below), whose sum is σ = 100325910. Its totient is φ = 26753568.

The previous prime is 53507141. The next prime is 53507171. The reversal of 53507144 is 44170535.

It can be written as a sum of positive squares in only one way, i.e., 40475044 + 13032100 = 6362^2 + 3610^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (53507141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3344189 + ... + 3344204.

Almost surely, 2^53507144 is an apocalyptic number.

It is an amenable number.

53507144 is a deficient number, since it is larger than the sum of its proper divisors (46818766).

53507144 is a wasteful number, since it uses less digits than its factorization.

53507144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688399 (or 6688395 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 53507144 is about 7314.8577566485. The cubic root of 53507144 is about 376.8228734032.

Adding to 53507144 its reverse (44170535), we get a palindrome (97677679).

The spelling of 53507144 in words is "fifty-three million, five hundred seven thousand, one hundred forty-four".