55156551101 has 2 divisors, whose sum is σ = 55156551102. Its totient is φ = 55156551100.

The previous prime is 55156551097. The next prime is 55156551157. The reversal of 55156551101 is 10115565155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34949928601 + 20206622500 = 186949^2 + 142150^2 .

It is a cyclic number.

It is not a de Polignac number, because 55156551101 - 2² = 55156551097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55156551301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27578275550 + 27578275551.

It is an arithmetic number, because the mean of its divisors is an integer number (27578275551).

Almost surely, 2^55156551101 is an apocalyptic number.

It is an amenable number.

55156551101 is a deficient number, since it is larger than the sum of its proper divisors (1).

55156551101 is an equidigital number, since it uses as much as digits as its factorization.

55156551101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 55156551101 in words is "fifty-five billion, one hundred fifty-six million, five hundred fifty-one thousand, one hundred one".