1457641 has 4 divisors (see below), whose sum is σ = 1462612. Its totient is φ = 1452672.

The previous prime is 1457639. The next prime is 1457647. The reversal of 1457641 is 1467541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1467541 = 19 ⋅77239.

It can be written as a sum of positive squares in 2 ways, for example, as 67600 + 1390041 = 260^2 + 1179^2 .

It is a cyclic number.

It is not a de Polignac number, because 1457641 - 2¹ = 1457639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1457647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2016 + ... + 2641.

It is an arithmetic number, because the mean of its divisors is an integer number (365653).

2^1457641 is an apocalyptic number.

It is an amenable number.

1457641 is a deficient number, since it is larger than the sum of its proper divisors (4971).

1457641 is an equidigital number, since it uses as much as digits as its factorization.

1457641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970.

The product of its digits is 3360, while the sum is 28.

The square root of 1457641 is about 1207.3280415860. The cubic root of 1457641 is about 113.3835869024.

The spelling of 1457641 in words is "one million, four hundred fifty-seven thousand, six hundred forty-one".