1597131 has 16 divisors (see below), whose sum is σ = 2388000. Its totient is φ = 1054944.

The previous prime is 1597129. The next prime is 1597139. The reversal of 1597131 is 1317951.

It is a happy number.

It is not a de Polignac number, because 1597131 - 2¹ = 1597129 is a prime.

It is a super-2 number, since 2×1597131² = 5101654862322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1597095 and 1597104.

It is not an unprimeable number, because it can be changed into a prime (1597139) 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, 3825 + ... + 4221.

It is an arithmetic number, because the mean of its divisors is an integer number (149250).

2^1597131 is an apocalyptic number.

1597131 is a deficient number, since it is larger than the sum of its proper divisors (790869).

1597131 is a wasteful number, since it uses less digits than its factorization.

1597131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 549 counting only the distinct ones).

The product of its digits is 945, while the sum is 27.

The square root of 1597131 is about 1263.7764834020. The cubic root of 1597131 is about 116.8907593113.

It can be divided in two parts, 1597 and 131, that added together give a cube (1728 = 12³).

The spelling of 1597131 in words is "one million, five hundred ninety-seven thousand, one hundred thirty-one".