55356447 has 16 divisors (see below), whose sum is σ = 76717440. Its totient is φ = 35462112.

The previous prime is 55356439. The next prime is 55356451. The reversal of 55356447 is 74465355.

It is not a de Polignac number, because 55356447 - 2³ = 55356439 is a prime.

It is a super-4 number, since 4×55356447⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55356407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18348 + ... + 21150.

It is an arithmetic number, because the mean of its divisors is an integer number (4794840).

Almost surely, 2^55356447 is an apocalyptic number.

55356447 is a deficient number, since it is larger than the sum of its proper divisors (21360993).

55356447 is a wasteful number, since it uses less digits than its factorization.

55356447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062.

The product of its digits is 252000, while the sum is 39.

The square root of 55356447 is about 7440.1913281850. The cubic root of 55356447 is about 381.1150237232.

The spelling of 55356447 in words is "fifty-five million, three hundred fifty-six thousand, four hundred forty-seven".