1055123057 has 2 divisors, whose sum is σ = 1055123058. Its totient is φ = 1055123056.

The previous prime is 1055123033. The next prime is 1055123089. The reversal of 1055123057 is 7503215501.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 815616481 + 239506576 = 28559^2 + 15476^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055123057 - 2¹⁴ = 1055106673 is a prime.

It is a super-2 number, since 2×1055123057² = 2226569330826050498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1055113057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527561528 + 527561529.

It is an arithmetic number, because the mean of its divisors is an integer number (527561529).

Almost surely, 2^1055123057 is an apocalyptic number.

It is an amenable number.

1055123057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055123057 is an equidigital number, since it uses as much as digits as its factorization.

1055123057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 1055123057 is about 32482.6577884261. The cubic root of 1055123057 is about 1018.0467094386.

Adding to 1055123057 its reverse (7503215501), we get a palindrome (8558338558).

The spelling of 1055123057 in words is "one billion, fifty-five million, one hundred twenty-three thousand, fifty-seven".