55909967 has 8 divisors (see below), whose sum is σ = 56476224. Its totient is φ = 55346848.

The previous prime is 55909963. The next prime is 55909969. The reversal of 55909967 is 76990955.

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 55909967 - 2² = 55909963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55909963) 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, 50138 + ... + 51240.

It is an arithmetic number, because the mean of its divisors is an integer number (7059528).

Almost surely, 2^55909967 is an apocalyptic number.

55909967 is a deficient number, since it is larger than the sum of its proper divisors (566257).

55909967 is a wasteful number, since it uses less digits than its factorization.

55909967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569.

The product of its (nonzero) digits is 765450, while the sum is 50.

The square root of 55909967 is about 7477.2967708925. The cubic root of 55909967 is about 382.3810945140.

The spelling of 55909967 in words is "fifty-five million, nine hundred nine thousand, nine hundred sixty-seven".