55535401515 has 32 divisors (see below), whose sum is σ = 100061448192. Its totient is φ = 26057664000.

The previous prime is 55535401501. The next prime is 55535401601. The reversal of 55535401515 is 51510453555.

It is not a de Polignac number, because 55535401515 - 2⁴ = 55535401499 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5423566 + ... + 5433795.

It is an arithmetic number, because the mean of its divisors is an integer number (3126920256).

Almost surely, 2^55535401515 is an apocalyptic number.

55535401515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55535401515 is a deficient number, since it is larger than the sum of its proper divisors (44526046677).

55535401515 is a wasteful number, since it uses less digits than its factorization.

55535401515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10857411.

The product of its (nonzero) digits is 187500, while the sum is 39.

The spelling of 55535401515 in words is "fifty-five billion, five hundred thirty-five million, four hundred one thousand, five hundred fifteen".