55129463 has 4 divisors (see below), whose sum is σ = 55160280. Its totient is φ = 55098648.

The previous prime is 55129457. The next prime is 55129471. The reversal of 55129463 is 36492155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55129463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55129433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12548 + ... + 16361.

It is an arithmetic number, because the mean of its divisors is an integer number (13790070).

Almost surely, 2^55129463 is an apocalyptic number.

55129463 is a deficient number, since it is larger than the sum of its proper divisors (30817).

55129463 is a wasteful number, since it uses less digits than its factorization.

55129463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30816.

The product of its digits is 32400, while the sum is 35.

The square root of 55129463 is about 7424.9217504294. The cubic root of 55129463 is about 380.5934011280.

The spelling of 55129463 in words is "fifty-five million, one hundred twenty-nine thousand, four hundred sixty-three".