55540535537 has 2 divisors, whose sum is σ = 55540535538. Its totient is φ = 55540535536.

The previous prime is 55540535489. The next prime is 55540535543. The reversal of 55540535537 is 73553504555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40134512896 + 15406022641 = 200336^2 + 124121^2 .

It is a cyclic number.

It is not a de Polignac number, because 55540535537 - 2¹² = 55540531441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55540535491 and 55540535500.

It is not a weakly prime, because it can be changed into another prime (55540555537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27770267768 + 27770267769.

It is an arithmetic number, because the mean of its divisors is an integer number (27770267769).

Almost surely, 2^55540535537 is an apocalyptic number.

It is an amenable number.

55540535537 is a deficient number, since it is larger than the sum of its proper divisors (1).

55540535537 is an equidigital number, since it uses as much as digits as its factorization.

55540535537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3937500, while the sum is 47.

The spelling of 55540535537 in words is "fifty-five billion, five hundred forty million, five hundred thirty-five thousand, five hundred thirty-seven".