655172753 has 2 divisors, whose sum is σ = 655172754. Its totient is φ = 655172752.

The previous prime is 655172723. The next prime is 655172761. The reversal of 655172753 is 357271556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 560363584 + 94809169 = 23672^2 + 9737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655172753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655172753.

It is not a weakly prime, because it can be changed into another prime (655172723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327586376 + 327586377.

It is an arithmetic number, because the mean of its divisors is an integer number (327586377).

Almost surely, 2^655172753 is an apocalyptic number.

It is an amenable number.

655172753 is a deficient number, since it is larger than the sum of its proper divisors (1).

655172753 is an equidigital number, since it uses as much as digits as its factorization.

655172753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 220500, while the sum is 41.

The square root of 655172753 is about 25596.3425707658. The cubic root of 655172753 is about 868.5309037541.

The spelling of 655172753 in words is "six hundred fifty-five million, one hundred seventy-two thousand, seven hundred fifty-three".