55970797 has 2 divisors, whose sum is σ = 55970798. Its totient is φ = 55970796.

The previous prime is 55970773. The next prime is 55970819. The reversal of 55970797 is 79707955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43375396 + 12595401 = 6586^2 + 3549^2 .

It is a cyclic number.

It is not a de Polignac number, because 55970797 - 2¹¹ = 55968749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55970797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55974797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27985398 + 27985399.

It is an arithmetic number, because the mean of its divisors is an integer number (27985399).

Almost surely, 2^55970797 is an apocalyptic number.

It is an amenable number.

55970797 is a deficient number, since it is larger than the sum of its proper divisors (1).

55970797 is an equidigital number, since it uses as much as digits as its factorization.

55970797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 694575, while the sum is 49.

The square root of 55970797 is about 7481.3633115897. The cubic root of 55970797 is about 382.5197210274.

The spelling of 55970797 in words is "fifty-five million, nine hundred seventy thousand, seven hundred ninety-seven".