55717658 has 4 divisors (see below), whose sum is σ = 83576490. Its totient is φ = 27858828.

The previous prime is 55717657. The next prime is 55717667. The reversal of 55717658 is 85671755.

55717658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 29019769 + 26697889 = 5387^2 + 5167^2 .

It is not an unprimeable number, because it can be changed into a prime (55717657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13929413 + ... + 13929416.

Almost surely, 2^55717658 is an apocalyptic number.

55717658 is a deficient number, since it is larger than the sum of its proper divisors (27858832).

55717658 is a wasteful number, since it uses less digits than its factorization.

55717658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27858831.

The product of its digits is 294000, while the sum is 44.

The square root of 55717658 is about 7464.4261668262. The cubic root of 55717658 is about 381.9421757636.

The spelling of 55717658 in words is "fifty-five million, seven hundred seventeen thousand, six hundred fifty-eight".