1055522440 has 64 divisors (see below), whose sum is σ = 2832226560. Its totient is φ = 346156800.

The previous prime is 1055522431. The next prime is 1055522471. The reversal of 1055522440 is 442255501.

It is a super-2 number, since 2×1055522440² = 2228255242687107200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1055522399 and 1055522408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75511 + ... + 88390.

It is an arithmetic number, because the mean of its divisors is an integer number (44253540).

Almost surely, 2^1055522440 is an apocalyptic number.

1055522440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055522440 is an abundant number, since it is smaller than the sum of its proper divisors (1776704120).

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

1055522440 is a wasteful number, since it uses less digits than its factorization.

1055522440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163942 (or 163938 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1055522440 is about 32488.8048410526. The cubic root of 1055522440 is about 1018.1751428810.

Adding to 1055522440 its reverse (442255501), we get a palindrome (1497777941).

The spelling of 1055522440 in words is "one billion, fifty-five million, five hundred twenty-two thousand, four hundred forty".