553503361 has 2 divisors, whose sum is σ = 553503362. Its totient is φ = 553503360.

The previous prime is 553503359. The next prime is 553503373. The reversal of 553503361 is 163305355.

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., 553143361 + 360000 = 23519^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 553503361 - 2¹ = 553503359 is a prime.

It is a super-3 number, since 3×553503361³ (a number of 27 digits) contains 333 as substring.

Together with 553503359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (553503061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276751680 + 276751681.

It is an arithmetic number, because the mean of its divisors is an integer number (276751681).

Almost surely, 2^553503361 is an apocalyptic number.

It is an amenable number.

553503361 is a deficient number, since it is larger than the sum of its proper divisors (1).

553503361 is an equidigital number, since it uses as much as digits as its factorization.

553503361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20250, while the sum is 31.

The square root of 553503361 is about 23526.6521417732. The cubic root of 553503361 is about 821.0572131060.

The spelling of 553503361 in words is "five hundred fifty-three million, five hundred three thousand, three hundred sixty-one".