55056001001 has 2 divisors, whose sum is σ = 55056001002. Its totient is φ = 55056001000.

The previous prime is 55056000953. The next prime is 55056001009. The reversal of 55056001001 is 10010065055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40521287401 + 14534713600 = 201299^2 + 120560^2 .

It is a cyclic number.

It is not a de Polignac number, because 55056001001 - 2³⁴ = 37876131817 is a prime.

It is a super-2 number, since 2×55056001001² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55056001009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27528000500 + 27528000501.

It is an arithmetic number, because the mean of its divisors is an integer number (27528000501).

Almost surely, 2^55056001001 is an apocalyptic number.

It is an amenable number.

55056001001 is a deficient number, since it is larger than the sum of its proper divisors (1).

55056001001 is an equidigital number, since it uses as much as digits as its factorization.

55056001001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 55056001001 its reverse (10010065055), we get a palindrome (65066066056).

The spelling of 55056001001 in words is "fifty-five billion, fifty-six million, one thousand, one".