1516641 has 8 divisors (see below), whose sum is σ = 2311104. Its totient is φ = 866640.

The previous prime is 1516639. The next prime is 1516651. The reversal of 1516641 is 1466151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1516641 - 2¹ = 1516639 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1516651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36090 + ... + 36131.

It is an arithmetic number, because the mean of its divisors is an integer number (288888).

2^1516641 is an apocalyptic number.

It is an amenable number.

1516641 is a deficient number, since it is larger than the sum of its proper divisors (794463).

1516641 is an equidigital number, since it uses as much as digits as its factorization.

1516641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72231.

The product of its digits is 720, while the sum is 24.

The square root of 1516641 is about 1231.5197927764. The cubic root of 1516641 is about 114.8931837396.

The spelling of 1516641 in words is "one million, five hundred sixteen thousand, six hundred forty-one".