55142055 has 24 divisors (see below), whose sum is σ = 96014880. Its totient is φ = 29275200.

The previous prime is 55142053. The next prime is 55142081. The reversal of 55142055 is 55024155.

It is not a de Polignac number, because 55142055 - 2¹ = 55142053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55142051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7630 + ... + 12980.

It is an arithmetic number, because the mean of its divisors is an integer number (4000620).

Almost surely, 2^55142055 is an apocalyptic number.

55142055 is a deficient number, since it is larger than the sum of its proper divisors (40872825).

55142055 is a wasteful number, since it uses less digits than its factorization.

55142055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591 (or 5588 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 55142055 is about 7425.7696570793. The cubic root of 55142055 is about 380.6223757574.

It can be divided in two parts, 5514 and 2055, that added together give a square (7569 = 87²).

The spelling of 55142055 in words is "fifty-five million, one hundred forty-two thousand, fifty-five".