1451135261 has 2 divisors, whose sum is σ = 1451135262. Its totient is φ = 1451135260.

The previous prime is 1451135243. The next prime is 1451135269. The reversal of 1451135261 is 1625311541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1426195225 + 24940036 = 37765^2 + 4994^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451135261 - 2⁶ = 1451135197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1451135269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725567630 + 725567631.

It is an arithmetic number, because the mean of its divisors is an integer number (725567631).

Almost surely, 2^1451135261 is an apocalyptic number.

It is an amenable number.

1451135261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451135261 is an equidigital number, since it uses as much as digits as its factorization.

1451135261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 1451135261 is about 38093.7693199295. The cubic root of 1451135261 is about 1132.1465089104.

The spelling of 1451135261 in words is "one billion, four hundred fifty-one million, one hundred thirty-five thousand, two hundred sixty-one".