1557253 has 4 divisors (see below), whose sum is σ = 1571148. Its totient is φ = 1543360.

The previous prime is 1557247. The next prime is 1557287. The reversal of 1557253 is 3527551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 351649 + 1205604 = 593^2 + 1098^2 .

It is a cyclic number.

It is not a de Polignac number, because 1557253 - 2¹³ = 1549061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6778 + ... + 7003.

It is an arithmetic number, because the mean of its divisors is an integer number (392787).

2^1557253 is an apocalyptic number.

It is an amenable number.

1557253 is a deficient number, since it is larger than the sum of its proper divisors (13895).

1557253 is a wasteful number, since it uses less digits than its factorization.

1557253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13894.

The product of its digits is 5250, while the sum is 28.

The square root of 1557253 is about 1247.8994350508. The cubic root of 1557253 is about 115.9096849526.

It can be divided in two parts, 15572 and 53, that added together give a 6-th power (15625 = 5⁶).

The spelling of 1557253 in words is "one million, five hundred fifty-seven thousand, two hundred fifty-three".