2154501100 has 18 divisors (see below), whose sum is σ = 4675267604. Its totient is φ = 861800400.

The previous prime is 2154501091. The next prime is 2154501121. The reversal of 2154501100 is 11054512.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10772406 + ... + 10772605.

Almost surely, 2^2154501100 is an apocalyptic number.

2154501100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154501100 is an abundant number, since it is smaller than the sum of its proper divisors (2520766504).

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

2154501100 is a wasteful number, since it uses less digits than its factorization.

2154501100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21545025 (or 21545018 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 2154501100 is about 46416.6037103104. The cubic root of 2154501100 is about 1291.5629354552.

Adding to 2154501100 its reverse (11054512), we get a palindrome (2165555612).

The spelling of 2154501100 in words is "two billion, one hundred fifty-four million, five hundred one thousand, one hundred".