55487474 has 8 divisors (see below), whose sum is σ = 95121408. Its totient is φ = 23780340.

The previous prime is 55487447. The next prime is 55487479. The reversal of 55487474 is 47478455.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55487479) 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, 1981682 + ... + 1981709.

It is an arithmetic number, because the mean of its divisors is an integer number (11890176).

Almost surely, 2^55487474 is an apocalyptic number.

55487474 is a deficient number, since it is larger than the sum of its proper divisors (39633934).

55487474 is a wasteful number, since it uses less digits than its factorization.

55487474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963400.

The product of its digits is 627200, while the sum is 44.

The square root of 55487474 is about 7448.9914753609. The cubic root of 55487474 is about 381.4154826181.

The spelling of 55487474 in words is "fifty-five million, four hundred eighty-seven thousand, four hundred seventy-four".