553351121 has 2 divisors, whose sum is σ = 553351122. Its totient is φ = 553351120.

The previous prime is 553351109. The next prime is 553351153. The reversal of 553351121 is 121153355.

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., 469372225 + 83978896 = 21665^2 + 9164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553351121 is a prime.

It is a super-2 number, since 2×553351121² = 612394926223913282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (553351171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276675560 + 276675561.

It is an arithmetic number, because the mean of its divisors is an integer number (276675561).

Almost surely, 2^553351121 is an apocalyptic number.

It is an amenable number.

553351121 is a deficient number, since it is larger than the sum of its proper divisors (1).

553351121 is an equidigital number, since it uses as much as digits as its factorization.

553351121 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 553351121 is about 23523.4164397946. The cubic root of 553351121 is about 820.9819294849.

The spelling of 553351121 in words is "five hundred fifty-three million, three hundred fifty-one thousand, one hundred twenty-one".