55177540201 has 27 divisors (see below), whose sum is σ = 67144174461. Its totient is φ = 45207721944.

The previous prime is 55177540147. The next prime is 55177540217. The reversal of 55177540201 is 10204577155.

The square root of 55177540201 is 234899.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 55177540201 - 2⁹ = 55177539689 is a prime.

It is a super-2 number, since 2×55177540201² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55177540241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 37818010 + ... + 37819468.

Almost surely, 2^55177540201 is an apocalyptic number.

55177540201 is the 234899-th square number.

55177540201 is the 117450-th centered octagonal number.

It is an amenable number.

55177540201 is a deficient number, since it is larger than the sum of its proper divisors (11966634260).

55177540201 is an frugal number, since it uses more digits than its factorization.

55177540201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 37.

The spelling of 55177540201 in words is "fifty-five billion, one hundred seventy-seven million, five hundred forty thousand, two hundred one".