55474620 has 96 divisors (see below), whose sum is σ = 164989440. Its totient is φ = 13896960.

The previous prime is 55474589. The next prime is 55474631. The reversal of 55474620 is 2647455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83851 + ... + 84509.

It is an arithmetic number, because the mean of its divisors is an integer number (1718640).

Almost surely, 2^55474620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55474620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82494720).

55474620 is an abundant number, since it is smaller than the sum of its proper divisors (109514820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55474620 is a wasteful number, since it uses less digits than its factorization.

55474620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 55474620 is about 7448.1286240236. The cubic root of 55474620 is about 381.3860279629.

The spelling of 55474620 in words is "fifty-five million, four hundred seventy-four thousand, six hundred twenty".