1455139 has 4 divisors (see below), whose sum is σ = 1663024. Its totient is φ = 1247256.

The previous prime is 1455127. The next prime is 1455143. The reversal of 1455139 is 9315541.

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

It is a cyclic number.

It is not a de Polignac number, because 1455139 - 2⁷ = 1455011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1455119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103932 + ... + 103945.

It is an arithmetic number, because the mean of its divisors is an integer number (415756).

2^1455139 is an apocalyptic number.

1455139 is a deficient number, since it is larger than the sum of its proper divisors (207885).

1455139 is an equidigital number, since it uses as much as digits as its factorization.

1455139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207884.

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

The square root of 1455139 is about 1206.2914241592. The cubic root of 1455139 is about 113.3186764975.

The spelling of 1455139 in words is "one million, four hundred fifty-five thousand, one hundred thirty-nine".