55012031391 has 8 divisors (see below), whose sum is σ = 74910000384. Its totient is φ = 35894375000.

The previous prime is 55012031359. The next prime is 55012031411. The reversal of 55012031391 is 19313021055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55012031391 - 2⁵ = 55012031359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55012031341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195077985 + ... + 195078266.

It is an arithmetic number, because the mean of its divisors is an integer number (9363750048).

Almost surely, 2^55012031391 is an apocalyptic number.

55012031391 is a deficient number, since it is larger than the sum of its proper divisors (19897968993).

55012031391 is a wasteful number, since it uses less digits than its factorization.

55012031391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390156301.

The product of its (nonzero) digits is 4050, while the sum is 30.

The spelling of 55012031391 in words is "fifty-five billion, twelve million, thirty-one thousand, three hundred ninety-one".