1575423 has 32 divisors (see below), whose sum is σ = 2553600. Its totient is φ = 956448.

The previous prime is 1575421. The next prime is 1575433. The reversal of 1575423 is 3245751.

It is a happy number.

It is not a de Polignac number, because 1575423 - 2¹ = 1575421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 5 + 7⁴ + 5³ + 4¹⁰ + 2¹⁹ + 3³ .

1575423 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1575421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18940 + ... + 19022.

It is an arithmetic number, because the mean of its divisors is an integer number (79800).

2^1575423 is an apocalyptic number.

1575423 is a deficient number, since it is larger than the sum of its proper divisors (978177).

1575423 is a wasteful number, since it uses less digits than its factorization.

1575423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 142 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 1575423 is about 1255.1585557211. The cubic root of 1575423 is about 116.3587535867.

The spelling of 1575423 in words is "one million, five hundred seventy-five thousand, four hundred twenty-three".