52551633625561 has 12 divisors (see below), whose sum is σ = 61135670656692. Its totient is φ = 45041178513408.

The previous prime is 52551633625523. The next prime is 52551633625567. The reversal of 52551633625561 is 16552633615525.

It can be written as a sum of positive squares in 2 ways, for example, as 24907635470025 + 27643998155536 = 4990755^2 + 5257756^2 .

It is not a de Polignac number, because 52551633625561 - 2²³ = 52551625236953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52551633625567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35929000 + ... + 37363033.

It is an arithmetic number, because the mean of its divisors is an integer number (5094639221391).

Almost surely, 2^{52551633625561} is an apocalyptic number.

It is an amenable number.

52551633625561 is a deficient number, since it is larger than the sum of its proper divisors (8584037031131).

52551633625561 is a wasteful number, since it uses less digits than its factorization.

52551633625561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73306680 (or 73306673 counting only the distinct ones).

The product of its digits is 24300000, while the sum is 55.

The spelling of 52551633625561 in words is "fifty-two trillion, five hundred fifty-one billion, six hundred thirty-three million, six hundred twenty-five thousand, five hundred sixty-one".