1552139 has 4 divisors (see below), whose sum is σ = 1602240. Its totient is φ = 1502040.

The previous prime is 1552123. The next prime is 1552147. The reversal of 1552139 is 9312551.

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 1552139 - 2⁴ = 1552123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1552169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25004 + ... + 25065.

It is an arithmetic number, because the mean of its divisors is an integer number (400560).

2^1552139 is an apocalyptic number.

1552139 is a deficient number, since it is larger than the sum of its proper divisors (50101).

1552139 is an equidigital number, since it uses as much as digits as its factorization.

1552139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50100.

The product of its digits is 1350, while the sum is 26.

The square root of 1552139 is about 1245.8487067056. The cubic root of 1552139 is about 115.7826638050.

The spelling of 1552139 in words is "one million, five hundred fifty-two thousand, one hundred thirty-nine".