1056105515 has 8 divisors (see below), whose sum is σ = 1279171440. Its totient is φ = 836987872.

The previous prime is 1056105493. The next prime is 1056105517. The reversal of 1056105515 is 5155016501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1056105515 - 2¹⁴ = 1056089131 is a prime.

It is a super-2 number, since 2×1056105515² = 2230717717626830450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056105517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986480 + ... + 987549.

It is an arithmetic number, because the mean of its divisors is an integer number (159896430).

Almost surely, 2^1056105515 is an apocalyptic number.

1056105515 is a deficient number, since it is larger than the sum of its proper divisors (223065925).

1056105515 is a wasteful number, since it uses less digits than its factorization.

1056105515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974141.

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 1056105515 is about 32497.7770778249. Note that the first 3 decimals coincide. The cubic root of 1056105515 is about 1018.3625897689.

The spelling of 1056105515 in words is "one billion, fifty-six million, one hundred five thousand, five hundred fifteen".