1397553 has 16 divisors (see below), whose sum is σ = 2007360. Its totient is φ = 861696.

The previous prime is 1397551. The next prime is 1397563. The reversal of 1397553 is 3557931.

It is not a de Polignac number, because 1397553 - 2¹ = 1397551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1397551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3213 + ... + 3621.

It is an arithmetic number, because the mean of its divisors is an integer number (125460).

2^1397553 is an apocalyptic number.

It is an amenable number.

1397553 is a deficient number, since it is larger than the sum of its proper divisors (609807).

1397553 is a wasteful number, since it uses less digits than its factorization.

1397553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496.

The product of its digits is 14175, while the sum is 33.

The square root of 1397553 is about 1182.1814581527. The cubic root of 1397553 is about 111.8036792493.

It can be divided in two parts, 13975 and 53, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 1397553 in words is "one million, three hundred ninety-seven thousand, five hundred fifty-three".