1056415517 has 2 divisors, whose sum is σ = 1056415518. Its totient is φ = 1056415516.

The previous prime is 1056415501. The next prime is 1056415519. The reversal of 1056415517 is 7155146501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 974313796 + 82101721 = 31214^2 + 9061^2 .

It is an emirp because it is prime and its reverse (7155146501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1056415517 - 2⁴ = 1056415501 is a prime.

It is a super-2 number, since 2×1056415517² = 2232027489116754578, which contains 22 as substring.

Together with 1056415519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1056415519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528207758 + 528207759.

It is an arithmetic number, because the mean of its divisors is an integer number (528207759).

Almost surely, 2^1056415517 is an apocalyptic number.

It is an amenable number.

1056415517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056415517 is an equidigital number, since it uses as much as digits as its factorization.

1056415517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 35.

The square root of 1056415517 is about 32502.5463156350. The cubic root of 1056415517 is about 1018.4622210876.

The spelling of 1056415517 in words is "one billion, fifty-six million, four hundred fifteen thousand, five hundred seventeen".