1145617 has 4 divisors (see below), whose sum is σ = 1249776. Its totient is φ = 1041460.

The previous prime is 1145611. The next prime is 1145621. The reversal of 1145617 is 7165411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7165411 = 11 ⋅651401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145617 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1145591 and 1145600.

It is not an unprimeable number, because it can be changed into a prime (1145611) 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, 52063 + ... + 52084.

It is an arithmetic number, because the mean of its divisors is an integer number (312444).

2^1145617 is an apocalyptic number.

It is an amenable number.

1145617 is a deficient number, since it is larger than the sum of its proper divisors (104159).

1145617 is a wasteful number, since it uses less digits than its factorization.

1145617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104158.

The product of its digits is 840, while the sum is 25.

The square root of 1145617 is about 1070.3349942892. The cubic root of 1145617 is about 104.6356837357.

The spelling of 1145617 in words is "one million, one hundred forty-five thousand, six hundred seventeen".