1055644513 has 16 divisors (see below), whose sum is σ = 1340966016. Its totient is φ = 807056640.

The previous prime is 1055644493. The next prime is 1055644517. The reversal of 1055644513 is 3154465501.

It is a cyclic number.

It is not a de Polignac number, because 1055644513 - 2¹³ = 1055636321 is a prime.

It is a super-2 number, since 2×1055644513² = 2228770675654014338, which contains 22 as substring.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 125256 + ... + 133417.

It is an arithmetic number, because the mean of its divisors is an integer number (83810376).

Almost surely, 2^1055644513 is an apocalyptic number.

It is an amenable number.

1055644513 is a deficient number, since it is larger than the sum of its proper divisors (285321503).

1055644513 is a wasteful number, since it uses less digits than its factorization.

1055644513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258744.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1055644513 is about 32490.6834800378. The cubic root of 1055644513 is about 1018.2143926081.

The spelling of 1055644513 in words is "one billion, fifty-five million, six hundred forty-four thousand, five hundred thirteen".