1455722057 has 2 divisors, whose sum is σ = 1455722058. Its totient is φ = 1455722056.

The previous prime is 1455722041. The next prime is 1455722071. The reversal of 1455722057 is 7502275541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 867950521 + 587771536 = 29461^2 + 24244^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455722057 - 2⁴ = 1455722041 is a prime.

It is a super-2 number, since 2×1455722057² = 4238253414472622498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1455722057.

It is not a weakly prime, because it can be changed into another prime (1455722027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727861028 + 727861029.

It is an arithmetic number, because the mean of its divisors is an integer number (727861029).

Almost surely, 2^1455722057 is an apocalyptic number.

It is an amenable number.

1455722057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1455722057 is an equidigital number, since it uses as much as digits as its factorization.

1455722057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98000, while the sum is 38.

The square root of 1455722057 is about 38153.9258399447. The cubic root of 1455722057 is about 1133.3380962795.

Adding to 1455722057 its reverse (7502275541), we get a palindrome (8957997598).

The spelling of 1455722057 in words is "one billion, four hundred fifty-five million, seven hundred twenty-two thousand, fifty-seven".