553787881 has 2 divisors, whose sum is σ = 553787882. Its totient is φ = 553787880.

The previous prime is 553787833. The next prime is 553787891. The reversal of 553787881 is 188787355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 537312400 + 16475481 = 23180^2 + 4059^2 .

It is a cyclic number.

It is not a de Polignac number, because 553787881 - 2¹¹ = 553785833 is a prime.

It is a super-2 number, since 2×553787881² = 613362034284940322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (553787891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276893940 + 276893941.

It is an arithmetic number, because the mean of its divisors is an integer number (276893941).

Almost surely, 2^553787881 is an apocalyptic number.

It is an amenable number.

553787881 is a deficient number, since it is larger than the sum of its proper divisors (1).

553787881 is an equidigital number, since it uses as much as digits as its factorization.

553787881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1881600, while the sum is 52.

The square root of 553787881 is about 23532.6981240996. The cubic root of 553787881 is about 821.1978730061.

The spelling of 553787881 in words is "five hundred fifty-three million, seven hundred eighty-seven thousand, eight hundred eighty-one".