55535401505 has 16 divisors (see below), whose sum is σ = 69267268800. Its totient is φ = 42692986560.

The previous prime is 55535401501. The next prime is 55535401601. The reversal of 55535401505 is 50510453555.

It is a happy number.

It is not a de Polignac number, because 55535401505 - 2² = 55535401501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55535401501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 876995 + ... + 938184.

It is an arithmetic number, because the mean of its divisors is an integer number (4329204300).

Almost surely, 2^55535401505 is an apocalyptic number.

It is an amenable number.

55535401505 is a deficient number, since it is larger than the sum of its proper divisors (13731867295).

55535401505 is a wasteful number, since it uses less digits than its factorization.

55535401505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815424.

The product of its (nonzero) digits is 187500, while the sum is 38.

The spelling of 55535401505 in words is "fifty-five billion, five hundred thirty-five million, four hundred one thousand, five hundred five".