55667615 has 8 divisors (see below), whose sum is σ = 66855888. Its totient is φ = 44497600.

The previous prime is 55667593. The next prime is 55667629. The reversal of 55667615 is 51676655.

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

It is not a de Polignac number, because 55667615 - 2²⁰ = 54619039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3419 + ... + 11091.

It is an arithmetic number, because the mean of its divisors is an integer number (8356986).

Almost surely, 2^55667615 is an apocalyptic number.

55667615 is a deficient number, since it is larger than the sum of its proper divisors (11188273).

55667615 is a wasteful number, since it uses less digits than its factorization.

55667615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9129.

The product of its digits is 189000, while the sum is 41.

The square root of 55667615 is about 7461.0733142089. The cubic root of 55667615 is about 381.8277939671.

The spelling of 55667615 in words is "fifty-five million, six hundred sixty-seven thousand, six hundred fifteen".