5621257 has 4 divisors (see below), whose sum is σ = 5626116. Its totient is φ = 5616400.

The previous prime is 5621249. The next prime is 5621267. The reversal of 5621257 is 7521265.

5621257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 732736 + 4888521 = 856^2 + 2211^2 .

It is a cyclic number.

It is not a de Polignac number, because 5621257 - 2³ = 5621249 is a prime.

It is an Ulam number.

It is a Duffinian 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, 423 + ... + 3379.

It is an arithmetic number, because the mean of its divisors is an integer number (1406529).

Almost surely, 2^5621257 is an apocalyptic number.

It is an amenable number.

5621257 is a deficient number, since it is larger than the sum of its proper divisors (4859).

5621257 is a wasteful number, since it uses less digits than its factorization.

5621257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858.

The product of its digits is 4200, while the sum is 28.

The square root of 5621257 is about 2370.9190201270. The cubic root of 5621257 is about 177.8052092075.

The spelling of 5621257 in words is "five million, six hundred twenty-one thousand, two hundred fifty-seven".