1551253 has 4 divisors (see below), whose sum is σ = 1692288. Its totient is φ = 1410220.

The previous prime is 1551241. The next prime is 1551269. The reversal of 1551253 is 3521551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3521551 = 11 ⋅320141.

It is a cyclic number.

It is not a de Polignac number, because 1551253 - 2⁹ = 1550741 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 (1551203) 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 3 ways as a sum of consecutive naturals, for example, 70501 + ... + 70522.

It is an arithmetic number, because the mean of its divisors is an integer number (423072).

2^1551253 is an apocalyptic number.

It is an amenable number.

1551253 is a deficient number, since it is larger than the sum of its proper divisors (141035).

1551253 is a wasteful number, since it uses less digits than its factorization.

1551253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141034.

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

The square root of 1551253 is about 1245.4930750510. The cubic root of 1551253 is about 115.7606290591.

The spelling of 1551253 in words is "one million, five hundred fifty-one thousand, two hundred fifty-three".