1539145 has 8 divisors (see below), whose sum is σ = 1853640. Its totient is φ = 1226880.

The previous prime is 1539127. The next prime is 1539149. The reversal of 1539145 is 5419351.

It can be written as a sum of positive squares in 4 ways, for example, as 11449 + 1527696 = 107^2 + 1236^2 .

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

It is not a de Polignac number, because 1539145 - 2⁹ = 1538633 is a prime.

1539145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1539149) 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, 2421 + ... + 2989.

It is an arithmetic number, because the mean of its divisors is an integer number (231705).

2^1539145 is an apocalyptic number.

It is an amenable number.

1539145 is a deficient number, since it is larger than the sum of its proper divisors (314495).

1539145 is an equidigital number, since it uses as much as digits as its factorization.

1539145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115.

The product of its digits is 2700, while the sum is 28.

The square root of 1539145 is about 1240.6228274540. The cubic root of 1539145 is about 115.4586597677.

The spelling of 1539145 in words is "one million, five hundred thirty-nine thousand, one hundred forty-five".