1200549001 has 2 divisors, whose sum is σ = 1200549002. Its totient is φ = 1200549000.

The previous prime is 1200548983. The next prime is 1200549023. The reversal of 1200549001 is 1009450021.

1200549001 = 24500² + 24501².

It is an a-pointer prime, because the next prime (1200549023) can be obtained adding 1200549001 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600299001 + 600250000 = 24501^2 + 24500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200549001 - 2⁵ = 1200548969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200549071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600274500 + 600274501.

It is an arithmetic number, because the mean of its divisors is an integer number (600274501).

Almost surely, 2^1200549001 is an apocalyptic number.

1200549001 is the 24501-st centered square number.

It is an amenable number.

1200549001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200549001 is an equidigital number, since it uses as much as digits as its factorization.

1200549001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1200549001 is about 34648.9393921372. The cubic root of 1200549001 is about 1062.8206002023.

Adding to 1200549001 its reverse (1009450021), we get a palindrome (2209999022).

The spelling of 1200549001 in words is "one billion, two hundred million, five hundred forty-nine thousand, one".