55123424 has 12 divisors (see below), whose sum is σ = 108524304. Its totient is φ = 27561696.

The previous prime is 55123417. The next prime is 55123429. The reversal of 55123424 is 42432155.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55123393 and 55123402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55123429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861272 + ... + 861335.

It is an arithmetic number, because the mean of its divisors is an integer number (9043692).

Almost surely, 2^55123424 is an apocalyptic number.

It is an amenable number.

55123424 is a deficient number, since it is larger than the sum of its proper divisors (53400880).

55123424 is a wasteful number, since it uses less digits than its factorization.

55123424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722617 (or 1722609 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 55123424 is about 7424.5150683395. The cubic root of 55123424 is about 380.5795036139.

Adding to 55123424 its reverse (42432155), we get a palindrome (97555579).

The spelling of 55123424 in words is "fifty-five million, one hundred twenty-three thousand, four hundred twenty-four".