55015009201 has 2 divisors, whose sum is σ = 55015009202. Its totient is φ = 55015009200.

The previous prime is 55015009099. The next prime is 55015009211. The reversal of 55015009201 is 10290051055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55009011600 + 5997601 = 234540^2 + 2449^2 .

It is a cyclic number.

It is not a de Polignac number, because 55015009201 - 2⁷ = 55015009073 is a prime.

It is a super-2 number, since 2×55015009201² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55015009201.

It is not a weakly prime, because it can be changed into another prime (55015009211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27507504600 + 27507504601.

It is an arithmetic number, because the mean of its divisors is an integer number (27507504601).

Almost surely, 2^55015009201 is an apocalyptic number.

It is an amenable number.

55015009201 is a deficient number, since it is larger than the sum of its proper divisors (1).

55015009201 is an equidigital number, since it uses as much as digits as its factorization.

55015009201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 28.

The spelling of 55015009201 in words is "fifty-five billion, fifteen million, nine thousand, two hundred one".