5407621 has 4 divisors (see below), whose sum is σ = 5481772. Its totient is φ = 5333472.

The previous prime is 5407583. The next prime is 5407631. The reversal of 5407621 is 1267045.

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 2117025 + 3290596 = 1455^2 + 1814^2 .

It is a cyclic number.

It is not a de Polignac number, because 5407621 - 2⁹ = 5407109 is a prime.

It is a Duffinian number.

5407621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5407631) 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, 36966 + ... + 37111.

It is an arithmetic number, because the mean of its divisors is an integer number (1370443).

Almost surely, 2^5407621 is an apocalyptic number.

It is an amenable number.

5407621 is a deficient number, since it is larger than the sum of its proper divisors (74151).

5407621 is an equidigital number, since it uses as much as digits as its factorization.

5407621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74150.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 5407621 is about 2325.4292076948. The cubic root of 5407621 is about 175.5235586050.

The spelling of 5407621 in words is "five million, four hundred seven thousand, six hundred twenty-one".