5621897 has 4 divisors (see below), whose sum is σ = 5651220. Its totient is φ = 5592576.

The previous prime is 5621873. The next prime is 5621899. The reversal of 5621897 is 7981265.

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 1394761 + 4227136 = 1181^2 + 2056^2 .

It is a cyclic number.

It is not a de Polignac number, because 5621897 - 2²⁰ = 4573321 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5621897.

It is not an unprimeable number, because it can be changed into a prime (5621899) 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, 14372 + ... + 14757.

It is an arithmetic number, because the mean of its divisors is an integer number (1412805).

Almost surely, 2^5621897 is an apocalyptic number.

It is an amenable number.

5621897 is a deficient number, since it is larger than the sum of its proper divisors (29323).

5621897 is a wasteful number, since it uses less digits than its factorization.

5621897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29322.

The product of its digits is 30240, while the sum is 38.

The square root of 5621897 is about 2371.0539850455. The cubic root of 5621897 is about 177.8119568688.

The spelling of 5621897 in words is "five million, six hundred twenty-one thousand, eight hundred ninety-seven".