52821553 has 2 divisors, whose sum is σ = 52821554. Its totient is φ = 52821552.

The previous prime is 52821541. The next prime is 52821563. The reversal of 52821553 is 35512825.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50580544 + 2241009 = 7112^2 + 1497^2 .

It is a cyclic number.

It is not a de Polignac number, because 52821553 - 2⁵ = 52821521 is a prime.

It is a super-2 number, since 2×52821553² = 5580232922663618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52821523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26410776 + 26410777.

It is an arithmetic number, because the mean of its divisors is an integer number (26410777).

Almost surely, 2^52821553 is an apocalyptic number.

It is an amenable number.

52821553 is a deficient number, since it is larger than the sum of its proper divisors (1).

52821553 is an equidigital number, since it uses as much as digits as its factorization.

52821553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 31.

The square root of 52821553 is about 7267.8437655195. The cubic root of 52821553 is about 375.2065303811.

The spelling of 52821553 in words is "fifty-two million, eight hundred twenty-one thousand, five hundred fifty-three".