55466620 has 96 divisors (see below), whose sum is σ = 133249536. Its totient is φ = 19219200.

The previous prime is 55466581. The next prime is 55466623. The reversal of 55466620 is 2666455.

55466620 = T₂₃ + T₂₄ + ... + T₆₉₂.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55466623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 781185 + ... + 781255.

It is an arithmetic number, because the mean of its divisors is an integer number (1388016).

Almost surely, 2^55466620 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 55466620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66624768).

55466620 is an abundant number, since it is smaller than the sum of its proper divisors (77782916).

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

55466620 is a wasteful number, since it uses less digits than its factorization.

55466620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 55466620 is about 7447.5915570069. The cubic root of 55466620 is about 381.3676938436.

The spelling of 55466620 in words is "fifty-five million, four hundred sixty-six thousand, six hundred twenty".