1553361 has 8 divisors (see below), whose sum is σ = 2081184. Its totient is φ = 1030560.

The previous prime is 1553347. The next prime is 1553369. The reversal of 1553361 is 1633551.

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

It is not a de Polignac number, because 1553361 - 2⁵ = 1553329 is a prime.

1553361 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1553369) 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 7 ways as a sum of consecutive naturals, for example, 460 + ... + 1821.

It is an arithmetic number, because the mean of its divisors is an integer number (260148).

2^1553361 is an apocalyptic number.

It is an amenable number.

1553361 is a deficient number, since it is larger than the sum of its proper divisors (527823).

1553361 is a wasteful number, since it uses less digits than its factorization.

1553361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511.

The product of its digits is 1350, while the sum is 24.

The square root of 1553361 is about 1246.3390389457. The cubic root of 1553361 is about 115.8130410887.

The spelling of 1553361 in words is "one million, five hundred fifty-three thousand, three hundred sixty-one".