1055644515 has 32 divisors (see below), whose sum is σ = 1941422400. Its totient is φ = 543594240.

The previous prime is 1055644493. The next prime is 1055644517. The reversal of 1055644515 is 5154465501.

1055644515 is a `hidden beast` number, since 1 + 0 + 5 + 5 + 644 + 5 + 1 + 5 = 666.

It is not a de Polignac number, because 1055644515 - 2⁶ = 1055644451 is a prime.

It is a super-2 number, since 2×1055644515² = 2228770684099170450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1055644515.

It is not an unprimeable number, because it can be changed into a prime (1055644517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130906 + ... + 138735.

It is an arithmetic number, because the mean of its divisors is an integer number (60669450).

Almost surely, 2^1055644515 is an apocalyptic number.

1055644515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1055644515 is a deficient number, since it is larger than the sum of its proper divisors (885777885).

1055644515 is a wasteful number, since it uses less digits than its factorization.

1055644515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269684 (or 269678 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 1055644515 is about 32490.6835108158. The cubic root of 1055644515 is about 1018.2143932511.

The spelling of 1055644515 in words is "one billion, fifty-five million, six hundred forty-four thousand, five hundred fifteen".