53043442 has 4 divisors (see below), whose sum is σ = 79565166. Its totient is φ = 26521720.

The previous prime is 53043439. The next prime is 53043457. The reversal of 53043442 is 24434035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24434035 = 5 ⋅4886807.

It can be written as a sum of positive squares in only one way, i.e., 52142841 + 900601 = 7221^2 + 949^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13260859 + ... + 13260862.

Almost surely, 2^53043442 is an apocalyptic number.

53043442 is a deficient number, since it is larger than the sum of its proper divisors (26521724).

53043442 is a wasteful number, since it uses less digits than its factorization.

53043442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26521723.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 53043442 is about 7283.0928869540. The cubic root of 53043442 is about 375.7311766811.

Adding to 53043442 its reverse (24434035), we get a palindrome (77477477).

The spelling of 53043442 in words is "fifty-three million, forty-three thousand, four hundred forty-two".