55127205 has 72 divisors (see below), whose sum is σ = 116093952. Its totient is φ = 24083136.

The previous prime is 55127203. The next prime is 55127239. The reversal of 55127205 is 50272155.

It is a happy number.

It is not a de Polignac number, because 55127205 - 2¹ = 55127203 is a prime.

It is a super-2 number, since 2×55127205² = 6078017462224050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55127203) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 50172 + ... + 51258.

It is an arithmetic number, because the mean of its divisors is an integer number (1612416).

Almost surely, 2^55127205 is an apocalyptic number.

It is an amenable number.

55127205 is an abundant number, since it is smaller than the sum of its proper divisors (60966747).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55127205 is a wasteful number, since it uses less digits than its factorization.

55127205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55127205 is about 7424.7696933979. The cubic root of 55127205 is about 380.5882049251.

It can be divided in two parts, 55 and 127205, that added together give a triangular number (127260 = T₅₀₄).

The spelling of 55127205 in words is "fifty-five million, one hundred twenty-seven thousand, two hundred five".