55550050001 has 2 divisors, whose sum is σ = 55550050002. Its totient is φ = 55550050000.

The previous prime is 55550049991. The next prime is 55550050021. The reversal of 55550050001 is 10005005555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35008281025 + 20541768976 = 187105^2 + 143324^2 .

It is a cyclic number.

It is not a de Polignac number, because 55550050001 - 2³⁴ = 38370180817 is a prime.

It is a super-2 number, since 2×55550050001² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55550050021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775025000 + 27775025001.

It is an arithmetic number, because the mean of its divisors is an integer number (27775025001).

Almost surely, 2^55550050001 is an apocalyptic number.

It is an amenable number.

55550050001 is a deficient number, since it is larger than the sum of its proper divisors (1).

55550050001 is an equidigital number, since it uses as much as digits as its factorization.

55550050001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3125, while the sum is 26.

Adding to 55550050001 its reverse (10005005555), we get a palindrome (65555055556).

The spelling of 55550050001 in words is "fifty-five billion, five hundred fifty million, fifty thousand, one".