1056015605 has 8 divisors (see below), whose sum is σ = 1341761112. Its totient is φ = 795117568.

The previous prime is 1056015581. The next prime is 1056015661. The reversal of 1056015605 is 5065106501.

It can be written as a sum of positive squares in 4 ways, for example, as 506160004 + 549855601 = 22498^2 + 23449^2 .

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 1056015605 - 2¹⁶ = 1055950069 is a prime.

It is a super-2 number, since 2×1056015605² = 2230337916007032050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6211772 + ... + 6211941.

It is an arithmetic number, because the mean of its divisors is an integer number (167720139).

Almost surely, 2^1056015605 is an apocalyptic number.

It is an amenable number.

1056015605 is a deficient number, since it is larger than the sum of its proper divisors (285745507).

1056015605 is a wasteful number, since it uses less digits than its factorization.

1056015605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12423735.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1056015605 is about 32496.3937229964. The cubic root of 1056015605 is about 1018.3336900117. Note that the first 3 decimals are identical.

The spelling of 1056015605 in words is "one billion, fifty-six million, fifteen thousand, six hundred five".