5621237 has 4 divisors (see below), whose sum is σ = 5951916. Its totient is φ = 5290560.

The previous prime is 5621221. The next prime is 5621243. The reversal of 5621237 is 7321265.

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 5262436 + 358801 = 2294^2 + 599^2 .

It is a cyclic number.

It is not a de Polignac number, because 5621237 - 2⁴ = 5621221 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621267) 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, 165314 + ... + 165347.

It is an arithmetic number, because the mean of its divisors is an integer number (1487979).

Almost surely, 2^5621237 is an apocalyptic number.

It is an amenable number.

5621237 is a deficient number, since it is larger than the sum of its proper divisors (330679).

5621237 is a wasteful number, since it uses less digits than its factorization.

5621237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330678.

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

The square root of 5621237 is about 2370.9148023495. The cubic root of 5621237 is about 177.8049983348.

The spelling of 5621237 in words is "five million, six hundred twenty-one thousand, two hundred thirty-seven".