55128762 has 40 divisors (see below), whose sum is σ = 133036596. Its totient is φ = 16962048.

The previous prime is 55128761. The next prime is 55128763. The reversal of 55128762 is 26782155.

It is a happy number.

55128762 is a `hidden beast` number, since 5 + 512 + 87 + 62 = 666.

55128762 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55128761) and next prime (55128763).

It can be written as a sum of positive squares in 2 ways, for example, as 54597321 + 531441 = 7389^2 + 729^2 .

It is not an unprimeable number, because it can be changed into a prime (55128761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10983 + ... + 15194.

Almost surely, 2^55128762 is an apocalyptic number.

55128762 is an abundant number, since it is smaller than the sum of its proper divisors (77907834).

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

55128762 is a wasteful number, since it uses less digits than its factorization.

55128762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26204 (or 26195 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 55128762 is about 7424.8745443947. The cubic root of 55128762 is about 380.5917879730.

The spelling of 55128762 in words is "fifty-five million, one hundred twenty-eight thousand, seven hundred sixty-two".