55180491 has 8 divisors (see below), whose sum is σ = 75139584. Its totient is φ = 36004200.

The previous prime is 55180471. The next prime is 55180493. The reversal of 55180491 is 19408155.

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

It is not a de Polignac number, because 55180491 - 2¹¹ = 55178443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55180493) 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, 195535 + ... + 195816.

It is an arithmetic number, because the mean of its divisors is an integer number (9392448).

Almost surely, 2^55180491 is an apocalyptic number.

55180491 is a deficient number, since it is larger than the sum of its proper divisors (19959093).

55180491 is a wasteful number, since it uses less digits than its factorization.

55180491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391401.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 55180491 is about 7428.3572208127. The cubic root of 55180491 is about 380.7107910564.

The spelling of 55180491 in words is "fifty-five million, one hundred eighty thousand, four hundred ninety-one".