1513125 has 30 divisors (see below), whose sum is σ = 2741310. Its totient is φ = 804000.

The previous prime is 1513123. The next prime is 1513139. The reversal of 1513125 is 5213151.

It can be written as a sum of positive squares in 5 ways, for example, as 986049 + 527076 = 993^2 + 726^2 .

It is not a de Polignac number, because 1513125 - 2¹ = 1513123 is a prime.

It is an Ulam number.

1513125 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1513098 and 1513107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1513121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 5491 + ... + 5759.

It is an arithmetic number, because the mean of its divisors is an integer number (91377).

2^1513125 is an apocalyptic number.

1513125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1513125 is a deficient number, since it is larger than the sum of its proper divisors (1228185).

1513125 is an equidigital number, since it uses as much as digits as its factorization.

1513125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 277 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 1513125 is about 1230.0914600143. The cubic root of 1513125 is about 114.8043301470.

Adding to 1513125 its reverse (5213151), we get a palindrome (6726276).

The spelling of 1513125 in words is "one million, five hundred thirteen thousand, one hundred twenty-five".