1115122457 has 2 divisors, whose sum is σ = 1115122458. Its totient is φ = 1115122456.

The previous prime is 1115122447. The next prime is 1115122493. The reversal of 1115122457 is 7542215111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 802928896 + 312193561 = 28336^2 + 17669^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115122457 - 2²² = 1110928153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115122447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557561228 + 557561229.

It is an arithmetic number, because the mean of its divisors is an integer number (557561229).

Almost surely, 2^1115122457 is an apocalyptic number.

It is an amenable number.

1115122457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115122457 is an equidigital number, since it uses as much as digits as its factorization.

1115122457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 29.

The square root of 1115122457 is about 33393.4493127020. The cubic root of 1115122457 is about 1036.9890901417.

Adding to 1115122457 its reverse (7542215111), we get a palindrome (8657337568).

The spelling of 1115122457 in words is "one billion, one hundred fifteen million, one hundred twenty-two thousand, four hundred fifty-seven".