1457189 has 4 divisors (see below), whose sum is σ = 1542924. Its totient is φ = 1371456.

The previous prime is 1457177. The next prime is 1457201. The reversal of 1457189 is 9817541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9817541 = 59 ⋅166399.

It is an interprime number because it is at equal distance from previous prime (1457177) and next prime (1457201).

It can be written as a sum of positive squares in 2 ways, for example, as 708964 + 748225 = 842^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 1457189 - 2¹² = 1453093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1457149) 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, 42842 + ... + 42875.

It is an arithmetic number, because the mean of its divisors is an integer number (385731).

2^1457189 is an apocalyptic number.

It is an amenable number.

1457189 is a deficient number, since it is larger than the sum of its proper divisors (85735).

1457189 is an equidigital number, since it uses as much as digits as its factorization.

1457189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85734.

The product of its digits is 10080, while the sum is 35.

The square root of 1457189 is about 1207.1408368538. The cubic root of 1457189 is about 113.3718659826.

The spelling of 1457189 in words is "one million, four hundred fifty-seven thousand, one hundred eighty-nine".