1055430550 has 72 divisors (see below), whose sum is σ = 2138628744. Its totient is φ = 386173440.

The previous prime is 1055430547. The next prime is 1055430577. The reversal of 1055430550 is 550345501.

It is a super-2 number, since 2×1055430550² = 2227867291746605000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1163197 + ... + 1164103.

It is an arithmetic number, because the mean of its divisors is an integer number (29703177).

Almost surely, 2^1055430550 is an apocalyptic number.

1055430550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1055430550 is an abundant number, since it is smaller than the sum of its proper divisors (1083198194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1055430550 is a wasteful number, since it uses less digits than its factorization.

1055430550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 1055430550 is about 32487.3906308278. The cubic root of 1055430550 is about 1018.1455957975.

The spelling of 1055430550 in words is "one billion, fifty-five million, four hundred thirty thousand, five hundred fifty".