1345091 has 8 divisors (see below), whose sum is σ = 1553904. Its totient is φ = 1150720.

The previous prime is 1345079. The next prime is 1345117. The reversal of 1345091 is 1905431.

It is a happy number.

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 1345091 - 2⁶ = 1345027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1345051) 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, 3410 + ... + 3783.

It is an arithmetic number, because the mean of its divisors is an integer number (194238).

2^1345091 is an apocalyptic number.

1345091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1345091 is a deficient number, since it is larger than the sum of its proper divisors (208813).

1345091 is a wasteful number, since it uses less digits than its factorization.

1345091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7221.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1345091 is about 1159.7805826966. The cubic root of 1345091 is about 110.3868199539.

It can be divided in two parts, 134 and 5091, that added together give a palindrome (5225).

The spelling of 1345091 in words is "one million, three hundred forty-five thousand, ninety-one".