525255553 has 4 divisors (see below), whose sum is σ = 525358548. Its totient is φ = 525152560.

The previous prime is 525255547. The next prime is 525255557. The reversal of 525255553 is 355552525.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 323388289 + 201867264 = 17983^2 + 14208^2 .

It is a cyclic number.

It is not a de Polignac number, because 525255553 - 2¹³ = 525247361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525255557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43426 + ... + 54187.

It is an arithmetic number, because the mean of its divisors is an integer number (131339637).

Almost surely, 2^525255553 is an apocalyptic number.

It is an amenable number.

525255553 is a deficient number, since it is larger than the sum of its proper divisors (102995).

525255553 is an equidigital number, since it uses as much as digits as its factorization.

525255553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102994.

The product of its digits is 187500, while the sum is 37.

The square root of 525255553 is about 22918.4544199647. The cubic root of 525255553 is about 806.8451959164.

The spelling of 525255553 in words is "five hundred twenty-five million, two hundred fifty-five thousand, five hundred fifty-three".