1572545 has 12 divisors (see below), whose sum is σ = 2044476. Its totient is φ = 1160640.

The previous prime is 1572539. The next prime is 1572547. The reversal of 1572545 is 5452751.

It can be written as a sum of positive squares in 6 ways, for example, as 868624 + 703921 = 932^2 + 839^2 .

It is not a de Polignac number, because 1572545 - 2¹² = 1568449 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 1 + 5 + 7⁶ + 2²⁰ + 5⁶ + 4³ + 5⁸ .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1572547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86 + ... + 1775.

It is an arithmetic number, because the mean of its divisors is an integer number (170373).

2^1572545 is an apocalyptic number.

It is an amenable number.

1572545 is a deficient number, since it is larger than the sum of its proper divisors (471931).

1572545 is a wasteful number, since it uses less digits than its factorization.

1572545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892 (or 1879 counting only the distinct ones).

The product of its digits is 7000, while the sum is 29.

The square root of 1572545 is about 1254.0115629451. The cubic root of 1572545 is about 116.2878552478.

Subtracting from 1572545 its sum of digits (29), we obtain a square (1572516 = 1254²).

The spelling of 1572545 in words is "one million, five hundred seventy-two thousand, five hundred forty-five".