55810755049 has 9 divisors (see below), whose sum is σ = 64924638807. Its totient is φ = 47836372584.

The previous prime is 55810755019. The next prime is 55810755079. The reversal of 55810755049 is 94055701855.

The square root of 55810755049 is 236243.

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

It is an interprime number because it is at equal distance from previous prime (55810755019) and next prime (55810755079).

It can be written as a sum of positive squares in only one way, i.e., 51753065049 + 4057690000 = 227493^2 + 63700^2 .

It is not a de Polignac number, because 55810755049 - 2⁵ = 55810755017 is a prime.

It is a super-2 number, since 2×55810755049² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 55810754993 and 55810755011.

It is not an unprimeable number, because it can be changed into a prime (55810755019) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1636827 + ... + 1670575.

Almost surely, 2^55810755049 is an apocalyptic number.

55810755049 is the 236243-rd square number.

55810755049 is the 118122-nd centered octagonal number.

It is an amenable number.

55810755049 is a deficient number, since it is larger than the sum of its proper divisors (9113883758).

55810755049 is an frugal number, since it uses more digits than its factorization.

55810755049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67512 (or 33756 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 49.

Multiplying 55810755049 by its sum of digits (49), we get a square (2734726997401 = 1653701²).

55810755049 divided by its sum of digits (49) gives a square (1138995001 = 33749²).

The spelling of 55810755049 in words is "fifty-five billion, eight hundred ten million, seven hundred fifty-five thousand, forty-nine".