55700212100 has 36 divisors (see below), whose sum is σ = 130167114084. Its totient is φ = 20566231680.

The previous prime is 55700212063. The next prime is 55700212121. The reversal of 55700212100 is 121200755.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 9821999236 + 45878212864 = 99106^2 + 214192^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21421859 + ... + 21424458.

It is an arithmetic number, because the mean of its divisors is an integer number (3615753169).

Almost surely, 2^55700212100 is an apocalyptic number.

55700212100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55700212100 is an abundant number, since it is smaller than the sum of its proper divisors (74466901984).

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

55700212100 is a wasteful number, since it uses less digits than its factorization.

55700212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42846344 (or 42846337 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

Adding to 55700212100 its reverse (121200755), we get a palindrome (55821412855).

The spelling of 55700212100 in words is "fifty-five billion, seven hundred million, two hundred twelve thousand, one hundred".