1539945 has 64 divisors (see below), whose sum is σ = 3214080. Its totient is φ = 691200.

The previous prime is 1539943. The next prime is 1539961. The reversal of 1539945 is 5499351.

It is not a de Polignac number, because 1539945 - 2¹ = 1539943 is a prime.

It is a Curzon number.

1539945 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1539943) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25215 + ... + 25275.

It is an arithmetic number, because the mean of its divisors is an integer number (50220).

2^1539945 is an apocalyptic number.

1539945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1539945 is an abundant number, since it is smaller than the sum of its proper divisors (1674135).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1539945 is a wasteful number, since it uses less digits than its factorization.

1539945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 97 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 1539945 is about 1240.9452042697. The cubic root of 1539945 is about 115.4786602505.

The spelling of 1539945 in words is "one million, five hundred thirty-nine thousand, nine hundred forty-five".