1415621 has 4 divisors (see below), whose sum is σ = 1426092. Its totient is φ = 1405152.

The previous prime is 1415611. The next prime is 1415629. The reversal of 1415621 is 1265141.

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 940900 + 474721 = 970^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 1415621 - 2¹⁰ = 1414597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1415593 and 1415602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1415629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5030 + ... + 5303.

It is an arithmetic number, because the mean of its divisors is an integer number (356523).

2^1415621 is an apocalyptic number.

It is an amenable number.

1415621 is a deficient number, since it is larger than the sum of its proper divisors (10471).

1415621 is a wasteful number, since it uses less digits than its factorization.

1415621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10470.

The product of its digits is 240, while the sum is 20.

The square root of 1415621 is about 1189.7987224737. The cubic root of 1415621 is about 112.2834286180.

The spelling of 1415621 in words is "one million, four hundred fifteen thousand, six hundred twenty-one".