55971574 has 8 divisors (see below), whose sum is σ = 84788928.
Its totient is φ = 27708600.
The previous prime is 55971571. The next prime is 55971583. The reversal of 55971574 is 47517955.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a self number, because there is not a number n which added to its sum of digits gives 55971574.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (55971571) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138342 + ... + 138745.
It is an arithmetic number, because the mean of its divisors is an integer number (10598616).
Almost surely, 255971574 is an apocalyptic number.
55971574 is a deficient number, since it is larger than the sum of its proper divisors (28817354).
55971574 is a wasteful number, since it uses less digits than its factorization.
55971574 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 277190.
The product of its digits is 220500, while the sum is 43.
The square root of 55971574 is about 7481.4152404475.
The cubic root of 55971574 is about 382.5214910960.
The spelling of 55971574 in words is "fifty-five million, nine hundred seventy-one thousand, five hundred seventy-four".