1345551 has 8 divisors (see below), whose sum is σ = 1800240. Its totient is φ = 893952.

The previous prime is 1345549. The next prime is 1345559. The reversal of 1345551 is 1555431.

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

It is not a de Polignac number, because 1345551 - 2¹ = 1345549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345559) 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, 591 + ... + 1743.

It is an arithmetic number, because the mean of its divisors is an integer number (225030).

2^1345551 is an apocalyptic number.

1345551 is a deficient number, since it is larger than the sum of its proper divisors (454689).

1345551 is a wasteful number, since it uses less digits than its factorization.

1345551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545.

The product of its digits is 1500, while the sum is 24.

The square root of 1345551 is about 1159.9788791181. The cubic root of 1345551 is about 110.3994020394.

The spelling of 1345551 in words is "one million, three hundred forty-five thousand, five hundred fifty-one".