553744381 has 2 divisors, whose sum is σ = 553744382. Its totient is φ = 553744380.

The previous prime is 553744363. The next prime is 553744421. The reversal of 553744381 is 183447355.

It is an a-pointer prime, because the next prime (553744421) can be obtained adding 553744381 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332478756 + 221265625 = 18234^2 + 14875^2 .

It is a cyclic number.

It is not a de Polignac number, because 553744381 - 2⁷ = 553744253 is a prime.

It is a super-2 number, since 2×553744381² = 613265678978146322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553744781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276872190 + 276872191.

It is an arithmetic number, because the mean of its divisors is an integer number (276872191).

Almost surely, 2^553744381 is an apocalyptic number.

It is an amenable number.

553744381 is a deficient number, since it is larger than the sum of its proper divisors (1).

553744381 is an equidigital number, since it uses as much as digits as its factorization.

553744381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 40.

The square root of 553744381 is about 23531.7738600387. The cubic root of 553744381 is about 821.1763707642.

The spelling of 553744381 in words is "five hundred fifty-three million, seven hundred forty-four thousand, three hundred eighty-one".