1373545 has 4 divisors (see below), whose sum is σ = 1648260. Its totient is φ = 1098832.

The previous prime is 1373543. The next prime is 1373557. The reversal of 1373545 is 5453731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 549081 + 824464 = 741^2 + 908^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373545 - 2¹ = 1373543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1373543) 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, 137350 + ... + 137359.

It is an arithmetic number, because the mean of its divisors is an integer number (412065).

2^1373545 is an apocalyptic number.

It is an amenable number.

1373545 is a deficient number, since it is larger than the sum of its proper divisors (274715).

1373545 is an equidigital number, since it uses as much as digits as its factorization.

1373545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274714.

The product of its digits is 6300, while the sum is 28.

The square root of 1373545 is about 1171.9833616566. The cubic root of 1373545 is about 111.1597677637.

The spelling of 1373545 in words is "one million, three hundred seventy-three thousand, five hundred forty-five".