1550149 has 4 divisors (see below), whose sum is σ = 1557036. Its totient is φ = 1543264.

The previous prime is 1550147. The next prime is 1550161. The reversal of 1550149 is 9410551.

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

It can be written as a sum of positive squares in 2 ways, for example, as 145924 + 1404225 = 382^2 + 1185^2 .

It is a cyclic number.

It is not a de Polignac number, because 1550149 - 2¹ = 1550147 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 (1550141) 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, 3094 + ... + 3559.

It is an arithmetic number, because the mean of its divisors is an integer number (389259).

2^1550149 is an apocalyptic number.

It is an amenable number.

1550149 is a deficient number, since it is larger than the sum of its proper divisors (6887).

1550149 is an equidigital number, since it uses as much as digits as its factorization.

1550149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6886.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1550149 is about 1245.0497982009. The cubic root of 1550149 is about 115.7331609276.

The spelling of 1550149 in words is "one million, five hundred fifty thousand, one hundred forty-nine".