1572897459 has 8 divisors (see below), whose sum is σ = 2396796160. Its totient is φ = 898798536.

The previous prime is 1572897439. The next prime is 1572897509. The reversal of 1572897459 is 9547982751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1572897459 - 2⁹ = 1572896947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1572897399 and 1572897408.

It is not an unprimeable number, because it can be changed into a prime (1572897419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37449919 + ... + 37449960.

It is an arithmetic number, because the mean of its divisors is an integer number (299599520).

Almost surely, 2^1572897459 is an apocalyptic number.

1572897459 is a deficient number, since it is larger than the sum of its proper divisors (823898701).

1572897459 is an equidigital number, since it uses as much as digits as its factorization.

1572897459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74899889.

The product of its digits is 6350400, while the sum is 57.

The square root of 1572897459 is about 39659.7712928353. The cubic root of 1572897459 is about 1162.9654257514.

The spelling of 1572897459 in words is "one billion, five hundred seventy-two million, eight hundred ninety-seven thousand, four hundred fifty-nine".