55617149 has 8 divisors (see below), whose sum is σ = 67301568. Its totient is φ = 44867520.

The previous prime is 55617143. The next prime is 55617173. The reversal of 55617149 is 94171655.

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 55617149 - 2⁸ = 55616893 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 (55617143) 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, 233567 + ... + 233804.

It is an arithmetic number, because the mean of its divisors is an integer number (8412696).

Almost surely, 2^55617149 is an apocalyptic number.

It is an amenable number.

55617149 is a deficient number, since it is larger than the sum of its proper divisors (11684419).

55617149 is a wasteful number, since it uses less digits than its factorization.

55617149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467395.

The product of its digits is 37800, while the sum is 38.

The square root of 55617149 is about 7457.6905942792. The cubic root of 55617149 is about 381.7123758896.

The spelling of 55617149 in words is "fifty-five million, six hundred seventeen thousand, one hundred forty-nine".