1553125 has 24 divisors (see below), whose sum is σ = 2249856. Its totient is φ = 1050000.

The previous prime is 1553119. The next prime is 1553129. The reversal of 1553125 is 5213551.

It is not a de Polignac number, because 1553125 - 2⁵ = 1553093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1553096 and 1553105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21840 + ... + 21910.

It is an arithmetic number, because the mean of its divisors is an integer number (93744).

2^1553125 is an apocalyptic number.

It is an amenable number.

1553125 is a deficient number, since it is larger than the sum of its proper divisors (696731).

1553125 is an frugal number, since it uses more digits than its factorization.

1553125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 83 counting only the distinct ones).

The product of its digits is 750, while the sum is 22.

The square root of 1553125 is about 1246.2443580615. The cubic root of 1553125 is about 115.8071756863.

Adding to 1553125 its reverse (5213551), we get a palindrome (6766676).

The spelling of 1553125 in words is "one million, five hundred fifty-three thousand, one hundred twenty-five".