55751329 has 2 divisors, whose sum is σ = 55751330. Its totient is φ = 55751328.

The previous prime is 55751317. The next prime is 55751357. The reversal of 55751329 is 92315755.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32490000 + 23261329 = 5700^2 + 4823^2 .

It is a cyclic number.

It is not a de Polignac number, because 55751329 - 2¹⁵ = 55718561 is a prime.

It is not a weakly prime, because it can be changed into another prime (55751359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27875664 + 27875665.

It is an arithmetic number, because the mean of its divisors is an integer number (27875665).

Almost surely, 2^55751329 is an apocalyptic number.

It is an amenable number.

55751329 is a deficient number, since it is larger than the sum of its proper divisors (1).

55751329 is an equidigital number, since it uses as much as digits as its factorization.

55751329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47250, while the sum is 37.

The square root of 55751329 is about 7466.6812574262. The cubic root of 55751329 is about 382.0190980282.

The spelling of 55751329 in words is "fifty-five million, seven hundred fifty-one thousand, three hundred twenty-nine".