1572571045 has 4 divisors (see below), whose sum is σ = 1887085260. Its totient is φ = 1258056832.

The previous prime is 1572571001. The next prime is 1572571051. The reversal of 1572571045 is 5401752751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5401752751 = 43 ⋅125622157.

It can be written as a sum of positive squares in 2 ways, for example, as 1124529156 + 448041889 = 33534^2 + 21167^2 .

It is a cyclic number.

It is not a de Polignac number, because 1572571045 - 2¹³ = 1572562853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1572570995 and 1572571013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157257100 + ... + 157257109.

It is an arithmetic number, because the mean of its divisors is an integer number (471771315).

Almost surely, 2^1572571045 is an apocalyptic number.

It is an amenable number.

1572571045 is a deficient number, since it is larger than the sum of its proper divisors (314514215).

1572571045 is an equidigital number, since it uses as much as digits as its factorization.

1572571045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314514214.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 1572571045 is about 39655.6559017752. The cubic root of 1572571045 is about 1162.8849724333.

The spelling of 1572571045 in words is "one billion, five hundred seventy-two million, five hundred seventy-one thousand, forty-five".