1051355543 has 16 divisors (see below), whose sum is σ = 1209560064. Its totient is φ = 895177440.

The previous prime is 1051355477. The next prime is 1051355573. The reversal of 1051355543 is 3455531501.

It is a cyclic number.

It is not a de Polignac number, because 1051355543 - 2⁸ = 1051355287 is a prime.

It is a super-2 number, since 2×1051355543² = 2210696955593649698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051355573) 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, 813728 + ... + 815018.

It is an arithmetic number, because the mean of its divisors is an integer number (75597504).

Almost surely, 2^1051355543 is an apocalyptic number.

1051355543 is a deficient number, since it is larger than the sum of its proper divisors (158204521).

1051355543 is a wasteful number, since it uses less digits than its factorization.

1051355543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 1051355543 is about 32424.6132282253. The cubic root of 1051355543 is about 1016.8335557021.

The spelling of 1051355543 in words is "one billion, fifty-one million, three hundred fifty-five thousand, five hundred forty-three".