1055156100 has 72 divisors (see below), whose sum is σ = 3071345088. Its totient is φ = 279676800.

The previous prime is 1055156093. The next prime is 1055156117. The reversal of 1055156100 is 16515501.

It is a super-2 number, since 2×1055156100² = 2226708790734420000, which contains 22 as substring.

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, 39570 + ... + 60630.

Almost surely, 2^1055156100 is an apocalyptic number.

1055156100 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 1055156100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1535672544).

1055156100 is an abundant number, since it is smaller than the sum of its proper divisors (2016188988).

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

1055156100 is a wasteful number, since it uses less digits than its factorization.

1055156100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21245 (or 21238 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 1055156100 is about 32483.1664096960. The cubic root of 1055156100 is about 1018.0573366244.

The spelling of 1055156100 in words is "one billion, fifty-five million, one hundred fifty-six thousand, one hundred".