55957478 has 8 divisors (see below), whose sum is σ = 83974968. Its totient is φ = 27965824.

The previous prime is 55957477. The next prime is 55957483. The reversal of 55957478 is 87475955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55957471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425 + ... + 10587.

It is an arithmetic number, because the mean of its divisors is an integer number (10496871).

Almost surely, 2^55957478 is an apocalyptic number.

55957478 is a deficient number, since it is larger than the sum of its proper divisors (28017490).

55957478 is a wasteful number, since it uses less digits than its factorization.

55957478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12918.

The product of its digits is 1764000, while the sum is 50.

The square root of 55957478 is about 7480.4731133799. The cubic root of 55957478 is about 382.4893767252.

The spelling of 55957478 in words is "fifty-five million, nine hundred fifty-seven thousand, four hundred seventy-eight".