55318737 has 8 divisors (see below), whose sum is σ = 75751936. Its totient is φ = 35882352.

The previous prime is 55318733. The next prime is 55318763. The reversal of 55318737 is 73781355.

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

It is not a de Polignac number, because 55318737 - 2² = 55318733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55318695 and 55318704.

It is not an unprimeable number, because it can be changed into a prime (55318733) 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 7 ways as a sum of consecutive naturals, for example, 249073 + ... + 249294.

It is an arithmetic number, because the mean of its divisors is an integer number (9468992).

Almost surely, 2^55318737 is an apocalyptic number.

It is an amenable number.

55318737 is a deficient number, since it is larger than the sum of its proper divisors (20433199).

55318737 is a wasteful number, since it uses less digits than its factorization.

55318737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498407.

The product of its digits is 88200, while the sum is 39.

The square root of 55318737 is about 7437.6566874251. The cubic root of 55318737 is about 381.0284628194.

The spelling of 55318737 in words is "fifty-five million, three hundred eighteen thousand, seven hundred thirty-seven".