552100121538 has 32 divisors (see below), whose sum is σ = 1265755683840. Its totient is φ = 157266323280.

The previous prime is 552100121501. The next prime is 552100121567. The reversal of 552100121538 is 835121001255.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 552100121499 and 552100121508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19842958 + ... + 19870761.

It is an arithmetic number, because the mean of its divisors is an integer number (39554865120).

Almost surely, 2^552100121538 is an apocalyptic number.

552100121538 is an abundant number, since it is smaller than the sum of its proper divisors (713655562302).

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

552100121538 is a wasteful number, since it uses less digits than its factorization.

552100121538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39714062.

The product of its (nonzero) digits is 12000, while the sum is 33.

The spelling of 552100121538 in words is "five hundred fifty-two billion, one hundred million, one hundred twenty-one thousand, five hundred thirty-eight".