55142624 has 24 divisors (see below), whose sum is σ = 108727920. Its totient is φ = 27529216.

The previous prime is 55142621. The next prime is 55142629. The reversal of 55142624 is 42624155.

It is a super-4 number, since 4×55142624⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55142621) 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 in 3 ways as a sum of consecutive naturals, for example, 38432 + ... + 39840.

It is an arithmetic number, because the mean of its divisors is an integer number (4530330).

Almost surely, 2^55142624 is an apocalyptic number.

It is an amenable number.

55142624 is a deficient number, since it is larger than the sum of its proper divisors (53585296).

55142624 is a wasteful number, since it uses less digits than its factorization.

55142624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642 (or 2634 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 55142624 is about 7425.8079695074. The cubic root of 55142624 is about 380.6236849420.

Adding to 55142624 its reverse (42624155), we get a palindrome (97766779).

The spelling of 55142624 in words is "fifty-five million, one hundred forty-two thousand, six hundred twenty-four".