55308517 has 16 divisors (see below), whose sum is σ = 61871040. Its totient is φ = 49017600.

The previous prime is 55308499. The next prime is 55308529. The reversal of 55308517 is 71580355.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55308517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55308577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92973 + ... + 93565.

It is an arithmetic number, because the mean of its divisors is an integer number (3866940).

Almost surely, 2^55308517 is an apocalyptic number.

It is an amenable number.

55308517 is a deficient number, since it is larger than the sum of its proper divisors (6562523).

55308517 is a wasteful number, since it uses less digits than its factorization.

55308517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 55308517 is about 7436.9696113404. The cubic root of 55308517 is about 381.0049966852.

The spelling of 55308517 in words is "fifty-five million, three hundred eight thousand, five hundred seventeen".