55561362001 has 2 divisors, whose sum is σ = 55561362002. Its totient is φ = 55561362000.

The previous prime is 55561361927. The next prime is 55561362007. The reversal of 55561362001 is 10026316555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55484273601 + 77088400 = 235551^2 + 8780^2 .

It is a cyclic number.

It is not a de Polignac number, because 55561362001 - 2¹⁷ = 55561230929 is a prime.

It is not a weakly prime, because it can be changed into another prime (55561362007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780681000 + 27780681001.

It is an arithmetic number, because the mean of its divisors is an integer number (27780681001).

Almost surely, 2^55561362001 is an apocalyptic number.

It is an amenable number.

55561362001 is a deficient number, since it is larger than the sum of its proper divisors (1).

55561362001 is an equidigital number, since it uses as much as digits as its factorization.

55561362001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 55561362001 its reverse (10026316555), we get a palindrome (65587678556).

The spelling of 55561362001 in words is "fifty-five billion, five hundred sixty-one million, three hundred sixty-two thousand, one".