554252521 has 2 divisors, whose sum is σ = 554252522. Its totient is φ = 554252520.

The previous prime is 554252519. The next prime is 554252533. The reversal of 554252521 is 125252455.

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., 302586025 + 251666496 = 17395^2 + 15864^2 .

It is a cyclic number.

It is not a de Polignac number, because 554252521 - 2¹ = 554252519 is a prime.

Together with 554252519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (554252821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277126260 + 277126261.

It is an arithmetic number, because the mean of its divisors is an integer number (277126261).

Almost surely, 2^554252521 is an apocalyptic number.

It is an amenable number.

554252521 is a deficient number, since it is larger than the sum of its proper divisors (1).

554252521 is an equidigital number, since it uses as much as digits as its factorization.

554252521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20000, while the sum is 31.

The square root of 554252521 is about 23542.5682753603. The cubic root of 554252521 is about 821.4274763914.

The spelling of 554252521 in words is "five hundred fifty-four million, two hundred fifty-two thousand, five hundred twenty-one".