553521131 has 2 divisors, whose sum is σ = 553521132. Its totient is φ = 553521130.

The previous prime is 553521077. The next prime is 553521149. The reversal of 553521131 is 131125355.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 553521131 - 2¹⁴ = 553504747 is a prime.

It is a super-2 number, since 2×553521131² = 612771284927038322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 553521131.

It is not a weakly prime, because it can be changed into another prime (553521931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276760565 + 276760566.

It is an arithmetic number, because the mean of its divisors is an integer number (276760566).

Almost surely, 2^553521131 is an apocalyptic number.

553521131 is a deficient number, since it is larger than the sum of its proper divisors (1).

553521131 is an equidigital number, since it uses as much as digits as its factorization.

553521131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2250, while the sum is 26.

The square root of 553521131 is about 23527.0297955352. The cubic root of 553521131 is about 821.0659995811.

Adding to 553521131 its reverse (131125355), we get a palindrome (684646486).

The spelling of 553521131 in words is "five hundred fifty-three million, five hundred twenty-one thousand, one hundred thirty-one".