1572945 has 16 divisors (see below), whose sum is σ = 2745792. Its totient is φ = 762560.

The previous prime is 1572929. The next prime is 1572997. The reversal of 1572945 is 5492751.

It is not a de Polignac number, because 1572945 - 2⁴ = 1572929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4602 + ... + 4931.

It is an arithmetic number, because the mean of its divisors is an integer number (171612).

2^1572945 is an apocalyptic number.

1572945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1572945 is a deficient number, since it is larger than the sum of its proper divisors (1172847).

1572945 is a wasteful number, since it uses less digits than its factorization.

1572945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9552.

The product of its digits is 12600, while the sum is 33.

The square root of 1572945 is about 1254.1710409669. The cubic root of 1572945 is about 116.2977142553.

The spelling of 1572945 in words is "one million, five hundred seventy-two thousand, nine hundred forty-five".