55186270381 has 8 divisors (see below), whose sum is σ = 60215113728. Its totient is φ = 50159412000.

The previous prime is 55186270367. The next prime is 55186270421. The reversal of 55186270381 is 18307268155.

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 55186270381 - 2⁹ = 55186269869 is a prime.

It is a super-2 number, since 2×55186270381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55186270361) 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, 437805 + ... + 549586.

It is an arithmetic number, because the mean of its divisors is an integer number (7526889216).

Almost surely, 2^55186270381 is an apocalyptic number.

It is an amenable number.

55186270381 is a deficient number, since it is larger than the sum of its proper divisors (5028843347).

55186270381 is a wasteful number, since it uses less digits than its factorization.

55186270381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992483.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 55186270381 in words is "fifty-five billion, one hundred eighty-six million, two hundred seventy thousand, three hundred eighty-one".