53211437 has 4 divisors (see below), whose sum is σ = 53393340. Its totient is φ = 53029536.

The previous prime is 53211413. The next prime is 53211449. The reversal of 53211437 is 73411235.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42328036 + 10883401 = 6506^2 + 3299^2 .

It is a cyclic number.

It is not a de Polignac number, because 53211437 - 2⁸ = 53211181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53211737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90512 + ... + 91097.

It is an arithmetic number, because the mean of its divisors is an integer number (13348335).

Almost surely, 2^53211437 is an apocalyptic number.

It is an amenable number.

53211437 is a deficient number, since it is larger than the sum of its proper divisors (181903).

53211437 is a wasteful number, since it uses less digits than its factorization.

53211437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181902.

The product of its digits is 2520, while the sum is 26.

The square root of 53211437 is about 7294.6169878891. The cubic root of 53211437 is about 376.1274206930.

The spelling of 53211437 in words is "fifty-three million, two hundred eleven thousand, four hundred thirty-seven".