553172761 has 2 divisors, whose sum is σ = 553172762. Its totient is φ = 553172760.

The previous prime is 553172759. The next prime is 553172777. The reversal of 553172761 is 167271355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 472801536 + 80371225 = 21744^2 + 8965^2 .

It is a cyclic number.

It is not a de Polignac number, because 553172761 - 2¹ = 553172759 is a prime.

Together with 553172759, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 553172761.

It is not a weakly prime, because it can be changed into another prime (553172791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276586380 + 276586381.

It is an arithmetic number, because the mean of its divisors is an integer number (276586381).

Almost surely, 2^553172761 is an apocalyptic number.

It is an amenable number.

553172761 is a deficient number, since it is larger than the sum of its proper divisors (1).

553172761 is an equidigital number, since it uses as much as digits as its factorization.

553172761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44100, while the sum is 37.

The square root of 553172761 is about 23519.6250182693. The cubic root of 553172761 is about 820.8937117951.

The spelling of 553172761 in words is "five hundred fifty-three million, one hundred seventy-two thousand, seven hundred sixty-one".