1457561 has 4 divisors (see below), whose sum is σ = 1665792. Its totient is φ = 1249332.

The previous prime is 1457551. The next prime is 1457633. The reversal of 1457561 is 1657541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1457561 - 2⁶ = 1457497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1457501) 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, 104105 + ... + 104118.

It is an arithmetic number, because the mean of its divisors is an integer number (416448).

2^1457561 is an apocalyptic number.

It is an amenable number.

1457561 is a deficient number, since it is larger than the sum of its proper divisors (208231).

1457561 is an equidigital number, since it uses as much as digits as its factorization.

1457561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208230.

The product of its digits is 4200, while the sum is 29.

The square root of 1457561 is about 1207.2949101193. The cubic root of 1457561 is about 113.3815125798.

It can be divided in two parts, 14 and 57561, that added together give a palindrome (57575).

The spelling of 1457561 in words is "one million, four hundred fifty-seven thousand, five hundred sixty-one".