1145201 has 4 divisors (see below), whose sum is σ = 1147392. Its totient is φ = 1143012.

The previous prime is 1145191. The next prime is 1145203. The reversal of 1145201 is 1025411.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145201 is a prime.

It is a super-2 number, since 2×1145201² = 2622970660802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200 + ... + 1526.

It is an arithmetic number, because the mean of its divisors is an integer number (286848).

2^1145201 is an apocalyptic number.

It is an amenable number.

1145201 is a deficient number, since it is larger than the sum of its proper divisors (2191).

1145201 is an equidigital number, since it uses as much as digits as its factorization.

1145201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1145201 is about 1070.1406449621. The cubic root of 1145201 is about 104.6230169910.

The spelling of 1145201 in words is "one million, one hundred forty-five thousand, two hundred one".