55984657 has 2 divisors, whose sum is σ = 55984658. Its totient is φ = 55984656.

The previous prime is 55984651. The next prime is 55984673. The reversal of 55984657 is 75648955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55294096 + 690561 = 7436^2 + 831^2 .

It is a cyclic number.

It is not a de Polignac number, because 55984657 - 2¹¹ = 55982609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55984657.

It is not a weakly prime, because it can be changed into another prime (55984651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27992328 + 27992329.

It is an arithmetic number, because the mean of its divisors is an integer number (27992329).

Almost surely, 2^55984657 is an apocalyptic number.

It is an amenable number.

55984657 is a deficient number, since it is larger than the sum of its proper divisors (1).

55984657 is an equidigital number, since it uses as much as digits as its factorization.

55984657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512000, while the sum is 49.

The square root of 55984657 is about 7482.2895560116. The cubic root of 55984657 is about 382.5512927640.

The spelling of 55984657 in words is "fifty-five million, nine hundred eighty-four thousand, six hundred fifty-seven".