1397503 has 4 divisors (see below), whose sum is σ = 1458288. Its totient is φ = 1336720.

The previous prime is 1397497. The next prime is 1397509. The reversal of 1397503 is 3057931.

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

It is an interprime number because it is at equal distance from previous prime (1397497) and next prime (1397509).

It is a cyclic number.

It is not a de Polignac number, because 1397503 - 2⁹ = 1396991 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 (1397509) 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, 30358 + ... + 30403.

It is an arithmetic number, because the mean of its divisors is an integer number (364572).

2^1397503 is an apocalyptic number.

1397503 is a deficient number, since it is larger than the sum of its proper divisors (60785).

1397503 is an equidigital number, since it uses as much as digits as its factorization.

1397503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60784.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 1397503 is about 1182.1603106178. The cubic root of 1397503 is about 111.8023459067.

The spelling of 1397503 in words is "one million, three hundred ninety-seven thousand, five hundred three".