1155022457 has 2 divisors, whose sum is σ = 1155022458. Its totient is φ = 1155022456.

The previous prime is 1155022403. The next prime is 1155022501. The reversal of 1155022457 is 7542205511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1125199936 + 29822521 = 33544^2 + 5461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155022457 is a prime.

It is a super-4 number, since 4×1155022457⁴ (a number of 37 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1155022157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577511228 + 577511229.

It is an arithmetic number, because the mean of its divisors is an integer number (577511229).

Almost surely, 2^1155022457 is an apocalyptic number.

It is an amenable number.

1155022457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155022457 is an equidigital number, since it uses as much as digits as its factorization.

1155022457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 1155022457 is about 33985.6213272613. The cubic root of 1155022457 is about 1049.2125485221.

Adding to 1155022457 its reverse (7542205511), we get a palindrome (8697227968).

The spelling of 1155022457 in words is "one billion, one hundred fifty-five million, twenty-two thousand, four hundred fifty-seven".