1451342261 has 2 divisors, whose sum is σ = 1451342262. Its totient is φ = 1451342260.

The previous prime is 1451342213. The next prime is 1451342287. The reversal of 1451342261 is 1622431541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1439823025 + 11519236 = 37945^2 + 3394^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451342261 - 2⁶ = 1451342197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1451342201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725671130 + 725671131.

It is an arithmetic number, because the mean of its divisors is an integer number (725671131).

Almost surely, 2^1451342261 is an apocalyptic number.

It is an amenable number.

1451342261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451342261 is an equidigital number, since it uses as much as digits as its factorization.

1451342261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 1451342261 is about 38096.4862027983. The cubic root of 1451342261 is about 1132.2003387615.

The spelling of 1451342261 in words is "one billion, four hundred fifty-one million, three hundred forty-two thousand, two hundred sixty-one".