1572399 has 8 divisors (see below), whose sum is σ = 2329520. Its totient is φ = 1048248.

The previous prime is 1572379. The next prime is 1572401. The reversal of 1572399 is 9932751.

It is not a de Polignac number, because 1572399 - 2⁵ = 1572367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1572359) 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, 29092 + ... + 29145.

It is an arithmetic number, because the mean of its divisors is an integer number (291190).

2^1572399 is an apocalyptic number.

1572399 is a deficient number, since it is larger than the sum of its proper divisors (757121).

1572399 is an equidigital number, since it uses as much as digits as its factorization.

1572399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58246 (or 58240 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 1572399 is about 1253.9533484145. The cubic root of 1572399 is about 116.2842562936.

It can be divided in two parts, 157 and 2399, that added together give a triangular number (2556 = T₇₁).

The spelling of 1572399 in words is "one million, five hundred seventy-two thousand, three hundred ninety-nine".