55442947 has 8 divisors (see below), whose sum is σ = 64909152. Its totient is φ = 46363200.

The previous prime is 55442927. The next prime is 55442963. The reversal of 55442947 is 74924455.

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

It is a cyclic number.

It is not a de Polignac number, because 55442947 - 2⁷ = 55442819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55442927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96304 + ... + 96877.

It is an arithmetic number, because the mean of its divisors is an integer number (8113644).

Almost surely, 2^55442947 is an apocalyptic number.

55442947 is a deficient number, since it is larger than the sum of its proper divisors (9466205).

55442947 is a wasteful number, since it uses less digits than its factorization.

55442947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193229.

The product of its digits is 201600, while the sum is 40.

The square root of 55442947 is about 7446.0020816543. The cubic root of 55442947 is about 381.3134305641.

The spelling of 55442947 in words is "fifty-five million, four hundred forty-two thousand, nine hundred forty-seven".