1055665500 has 192 divisors, whose sum is σ = 3298434048. Its totient is φ = 261676800.

The previous prime is 1055665489. The next prime is 1055665519. The reversal of 1055665500 is 55665501.

It is a super-2 number, since 2×1055665500² = 2228859295780500000, 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 63 ways as a sum of consecutive naturals, for example, 1276087 + ... + 1276913.

It is an arithmetic number, because the mean of its divisors is an integer number (17179344).

Almost surely, 2^1055665500 is an apocalyptic number.

1055665500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055665500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1649217024).

1055665500 is an abundant number, since it is smaller than the sum of its proper divisors (2242768548).

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

1055665500 is a wasteful number, since it uses less digits than its factorization.

1055665500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 1055665500 is about 32491.0064479388. The cubic root of 1055665500 is about 1018.2211401838.

Subtracting from 1055665500 its reverse (55665501), we obtain a palindrome (999999999).

The spelling of 1055665500 in words is "one billion, fifty-five million, six hundred sixty-five thousand, five hundred".