55798657 has 4 divisors (see below), whose sum is σ = 55974996. Its totient is φ = 55622320.

The previous prime is 55798651. The next prime is 55798661. The reversal of 55798657 is 75689755.

55798657 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 2 ways, for example, as 22667121 + 33131536 = 4761^2 + 5756^2 .

It is a cyclic number.

It is not a de Polignac number, because 55798657 - 2¹⁹ = 55274369 is a prime.

It is a super-2 number, since 2×55798657² = 6226980246007298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55798651) 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 in 3 ways as a sum of consecutive naturals, for example, 87694 + ... + 88327.

It is an arithmetic number, because the mean of its divisors is an integer number (13993749).

Almost surely, 2^55798657 is an apocalyptic number.

It is an amenable number.

55798657 is a deficient number, since it is larger than the sum of its proper divisors (176339).

55798657 is a wasteful number, since it uses less digits than its factorization.

55798657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176338.

The product of its digits is 2646000, while the sum is 52.

The square root of 55798657 is about 7469.8498646224. The cubic root of 55798657 is about 382.1271677157.

The spelling of 55798657 in words is "fifty-five million, seven hundred ninety-eight thousand, six hundred fifty-seven".