1557125 has 8 divisors (see below), whose sum is σ = 1943448. Its totient is φ = 1245600.

The previous prime is 1557119. The next prime is 1557131. The reversal of 1557125 is 5217551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1557119) and next prime (1557131).

It can be written as a sum of positive squares in 4 ways, for example, as 2116 + 1555009 = 46^2 + 1247^2 .

It is not a de Polignac number, because 1557125 - 2⁴ = 1557109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1557094 and 1557103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6104 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (242931).

2^1557125 is an apocalyptic number.

It is an amenable number.

1557125 is a deficient number, since it is larger than the sum of its proper divisors (386323).

1557125 is an equidigital number, since it uses as much as digits as its factorization.

1557125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12472 (or 12462 counting only the distinct ones).

The product of its digits is 1750, while the sum is 26.

The square root of 1557125 is about 1247.8481478129. The cubic root of 1557125 is about 115.9065090940.

The spelling of 1557125 in words is "one million, five hundred fifty-seven thousand, one hundred twenty-five".