1055555450 has 48 divisors (see below), whose sum is σ = 2075760000. Its totient is φ = 398240640.

The previous prime is 1055555441. The next prime is 1055555467. The reversal of 1055555450 is 545555501.

It is a happy number.

It is a super-2 number, since 2×1055555450² = 2228394616049405000, 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 1055555450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224726 + ... + 229374.

It is an arithmetic number, because the mean of its divisors is an integer number (43245000).

Almost surely, 2^1055555450 is an apocalyptic number.

1055555450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1055555450 is a deficient number, since it is larger than the sum of its proper divisors (1020204550).

1055555450 is a wasteful number, since it uses less digits than its factorization.

1055555450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919 (or 4914 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 35.

The square root of 1055555450 is about 32489.3128582308. The cubic root of 1055555450 is about 1018.1857567754.

It can be divided in two parts, 105 and 5555450, that added together give a palindrome (5555555).

The spelling of 1055555450 in words is "one billion, fifty-five million, five hundred fifty-five thousand, four hundred fifty".