1455121747 has 2 divisors, whose sum is σ = 1455121748. Its totient is φ = 1455121746.

The previous prime is 1455121727. The next prime is 1455121751. The reversal of 1455121747 is 7471215541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1455121747 - 2²³ = 1446733139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1455121727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727560873 + 727560874.

It is an arithmetic number, because the mean of its divisors is an integer number (727560874).

Almost surely, 2^1455121747 is an apocalyptic number.

1455121747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1455121747 is an equidigital number, since it uses as much as digits as its factorization.

1455121747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39200, while the sum is 37.

The square root of 1455121747 is about 38146.0580794399. The cubic root of 1455121747 is about 1133.1822863770.

The spelling of 1455121747 in words is "one billion, four hundred fifty-five million, one hundred twenty-one thousand, seven hundred forty-seven".