55391019355 has 32 divisors (see below), whose sum is σ = 76257675648. Its totient is φ = 37836288000.

The previous prime is 55391019337. The next prime is 55391019373.

55391019355 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (55391019337) and next prime (55391019373).

It is not a de Polignac number, because 55391019355 - 2³⁵ = 21031280987 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 10856305 + ... + 10861405.

It is an arithmetic number, because the mean of its divisors is an integer number (2383052364).

Almost surely, 2^55391019355 is an apocalyptic number.

55391019355 is a deficient number, since it is larger than the sum of its proper divisors (20866656293).

55391019355 is a wasteful number, since it uses less digits than its factorization.

55391019355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247.

The product of its (nonzero) digits is 455625, while the sum is 46.

The spelling of 55391019355 in words is "fifty-five billion, three hundred ninety-one million, nineteen thousand, three hundred fifty-five".