1553149 has 8 divisors (see below), whose sum is σ = 1718360. Its totient is φ = 1394496.

The previous prime is 1553147. The next prime is 1553159. The reversal of 1553149 is 9413551.

1553149 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 4 ways, for example, as 156025 + 1397124 = 395^2 + 1182^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1553149 - 2¹ = 1553147 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 (1553147) 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, 1134 + ... + 2095.

It is an arithmetic number, because the mean of its divisors is an integer number (214795).

2^1553149 is an apocalyptic number.

It is an amenable number.

1553149 is a deficient number, since it is larger than the sum of its proper divisors (165211).

1553149 is a wasteful number, since it uses less digits than its factorization.

1553149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279.

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

The square root of 1553149 is about 1246.2539869545. The cubic root of 1553149 is about 115.8077721951.

The spelling of 1553149 in words is "one million, five hundred fifty-three thousand, one hundred forty-nine".