1345437 has 8 divisors (see below), whose sum is σ = 1993280. Its totient is φ = 896940.

The previous prime is 1345423. The next prime is 1345441. The reversal of 1345437 is 7345431.

It is not a de Polignac number, because 1345437 - 2¹¹ = 1343389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 49831 = 1345437 / (1 + 3 + 4 + 5 + 4 + 3 + 7).

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1345437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345457) 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 7 ways as a sum of consecutive naturals, for example, 24889 + ... + 24942.

It is an arithmetic number, because the mean of its divisors is an integer number (249160).

2^1345437 is an apocalyptic number.

It is an amenable number.

1345437 is a deficient number, since it is larger than the sum of its proper divisors (647843).

1345437 is an equidigital number, since it uses as much as digits as its factorization.

1345437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49840 (or 49834 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 1345437 is about 1159.9297392515. The cubic root of 1345437 is about 110.3962841377.

The spelling of 1345437 in words is "one million, three hundred forty-five thousand, four hundred thirty-seven".