55505500537 has 2 divisors, whose sum is σ = 55505500538. Its totient is φ = 55505500536.

The previous prime is 55505500529. The next prime is 55505500553. The reversal of 55505500537 is 73500550555.

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., 55159689321 + 345811216 = 234861^2 + 18596^2 .

It is a cyclic number.

It is not a de Polignac number, because 55505500537 - 2³ = 55505500529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55505500537.

It is not a weakly prime, because it can be changed into another prime (55505501537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27752750268 + 27752750269.

It is an arithmetic number, because the mean of its divisors is an integer number (27752750269).

Almost surely, 2^55505500537 is an apocalyptic number.

It is an amenable number.

55505500537 is a deficient number, since it is larger than the sum of its proper divisors (1).

55505500537 is an equidigital number, since it uses as much as digits as its factorization.

55505500537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 328125, while the sum is 40.

The spelling of 55505500537 in words is "fifty-five billion, five hundred five million, five hundred thousand, five hundred thirty-seven".