53211442 has 4 divisors (see below), whose sum is σ = 79817166. Its totient is φ = 26605720.

The previous prime is 53211413. The next prime is 53211449. The reversal of 53211442 is 24411235.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50680161 + 2531281 = 7119^2 + 1591^2 .

It is not an unprimeable number, because it can be changed into a prime (53211449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13302859 + ... + 13302862.

Almost surely, 2^53211442 is an apocalyptic number.

53211442 is a deficient number, since it is larger than the sum of its proper divisors (26605724).

53211442 is a wasteful number, since it uses less digits than its factorization.

53211442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26605723.

The product of its digits is 960, while the sum is 22.

The square root of 53211442 is about 7294.6173306075. The cubic root of 53211442 is about 376.1274324739.

Adding to 53211442 its reverse (24411235), we get a palindrome (77622677).

The spelling of 53211442 in words is "fifty-three million, two hundred eleven thousand, four hundred forty-two".