1145251001 has 2 divisors, whose sum is σ = 1145251002. Its totient is φ = 1145251000.

The previous prime is 1145250989. The next prime is 1145251007. The reversal of 1145251001 is 1001525411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1136701225 + 8549776 = 33715^2 + 2924^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145251001 - 2¹⁰ = 1145249977 is a prime.

It is a super-3 number, since 3×1145251001³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1145251007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572625500 + 572625501.

It is an arithmetic number, because the mean of its divisors is an integer number (572625501).

Almost surely, 2^1145251001 is an apocalyptic number.

It is an amenable number.

1145251001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145251001 is an equidigital number, since it uses as much as digits as its factorization.

1145251001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1145251001 is about 33841.5573075472. The cubic root of 1145251001 is about 1046.2453962886.

Adding to 1145251001 its reverse (1001525411), we get a palindrome (2146776412).

The spelling of 1145251001 in words is "one billion, one hundred forty-five million, two hundred fifty-one thousand, one".