55478132 has 6 divisors (see below), whose sum is σ = 97086738. Its totient is φ = 27739064.

The previous prime is 55478099. The next prime is 55478147. The reversal of 55478132 is 23187455.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37871716 + 17606416 = 6154^2 + 4196^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55478092 and 55478101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6934763 + ... + 6934770.

It is an arithmetic number, because the mean of its divisors is an integer number (16181123).

Almost surely, 2^55478132 is an apocalyptic number.

It is an amenable number.

55478132 is a deficient number, since it is larger than the sum of its proper divisors (41608606).

55478132 is a wasteful number, since it uses less digits than its factorization.

55478132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13869537 (or 13869535 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 55478132 is about 7448.3643842121. The cubic root of 55478132 is about 381.3940760845.

The spelling of 55478132 in words is "fifty-five million, four hundred seventy-eight thousand, one hundred thirty-two".