55645347 has 4 divisors (see below), whose sum is σ = 74193800. Its totient is φ = 37096896.

The previous prime is 55645339. The next prime is 55645351. The reversal of 55645347 is 74354655.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55645347 - 2³ = 55645339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55645147) 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, 9274222 + ... + 9274227.

It is an arithmetic number, because the mean of its divisors is an integer number (18548450).

Almost surely, 2^55645347 is an apocalyptic number.

55645347 is a deficient number, since it is larger than the sum of its proper divisors (18548453).

55645347 is a wasteful number, since it uses less digits than its factorization.

55645347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18548452.

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

The square root of 55645347 is about 7459.5808863501. The cubic root of 55645347 is about 381.7768746233.

The spelling of 55645347 in words is "fifty-five million, six hundred forty-five thousand, three hundred forty-seven".