55142498 has 4 divisors (see below), whose sum is σ = 82713750. Its totient is φ = 27571248.

The previous prime is 55142497. The next prime is 55142519. The reversal of 55142498 is 89424155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89424155 = 5 ⋅17884831.

It can be written as a sum of positive squares in only one way, i.e., 47430769 + 7711729 = 6887^2 + 2777^2 .

It is not an unprimeable number, because it can be changed into a prime (55142497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13785623 + ... + 13785626.

Almost surely, 2^55142498 is an apocalyptic number.

55142498 is a deficient number, since it is larger than the sum of its proper divisors (27571252).

55142498 is a wasteful number, since it uses less digits than its factorization.

55142498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27571251.

The product of its digits is 57600, while the sum is 38.

The square root of 55142498 is about 7425.7994855773. The cubic root of 55142498 is about 380.6233950355.

The spelling of 55142498 in words is "fifty-five million, one hundred forty-two thousand, four hundred ninety-eight".