55131230 has 96 divisors (see below), whose sum is σ = 130540032. Its totient is φ = 16378560.

The previous prime is 55131229. The next prime is 55131247. The reversal of 55131230 is 3213155.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 194669 + ... + 194951.

It is an arithmetic number, because the mean of its divisors is an integer number (1359792).

Almost surely, 2^55131230 is an apocalyptic number.

55131230 is an abundant number, since it is smaller than the sum of its proper divisors (75408802).

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

55131230 is a wasteful number, since it uses less digits than its factorization.

55131230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 55131230 is about 7425.0407406290. The cubic root of 55131230 is about 380.5974673225.

Adding to 55131230 its reverse (3213155), we get a palindrome (58344385).

The spelling of 55131230 in words is "fifty-five million, one hundred thirty-one thousand, two hundred thirty".