1572457045 has 4 divisors (see below), whose sum is σ = 1886948460. Its totient is φ = 1257965632.

The previous prime is 1572457027. The next prime is 1572457057. The reversal of 1572457045 is 5407542751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 219247249 + 1353209796 = 14807^2 + 36786^2 .

It is a cyclic number.

It is not a de Polignac number, because 1572457045 - 2⁵ = 1572457013 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1572456989 and 1572457007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157245700 + ... + 157245709.

It is an arithmetic number, because the mean of its divisors is an integer number (471737115).

Almost surely, 2^1572457045 is an apocalyptic number.

It is an amenable number.

1572457045 is a deficient number, since it is larger than the sum of its proper divisors (314491415).

1572457045 is an equidigital number, since it uses as much as digits as its factorization.

1572457045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314491414.

The product of its (nonzero) digits is 196000, while the sum is 40.

The square root of 1572457045 is about 39654.2185019450. The cubic root of 1572457045 is about 1162.8568715110.

Adding to 1572457045 its reverse (5407542751), we get a palindrome (6979999796).

The spelling of 1572457045 in words is "one billion, five hundred seventy-two million, four hundred fifty-seven thousand, forty-five".