55329478 has 8 divisors (see below), whose sum is σ = 83071872. Its totient is φ = 27638856.

The previous prime is 55329473. The next prime is 55329523. The reversal of 55329478 is 87492355.

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

It is a super-2 number, since 2×55329478² = 6122702271504968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55329473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10150 + ... + 14617.

It is an arithmetic number, because the mean of its divisors is an integer number (10383984).

Almost surely, 2^55329478 is an apocalyptic number.

55329478 is a deficient number, since it is larger than the sum of its proper divisors (27742394).

55329478 is a wasteful number, since it uses less digits than its factorization.

55329478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25886.

The product of its digits is 302400, while the sum is 43.

The square root of 55329478 is about 7438.3787211999. The cubic root of 55329478 is about 381.0531221066.

The spelling of 55329478 in words is "fifty-five million, three hundred twenty-nine thousand, four hundred seventy-eight".