55246620 has 192 divisors, whose sum is σ = 186955776. Its totient is φ = 12011520.

The previous prime is 55246603. The next prime is 55246643. The reversal of 55246620 is 2664255.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 403192 + ... + 403328.

It is an arithmetic number, because the mean of its divisors is an integer number (973728).

Almost surely, 2^55246620 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 55246620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93477888).

55246620 is an abundant number, since it is smaller than the sum of its proper divisors (131709156).

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

55246620 is a wasteful number, since it uses less digits than its factorization.

55246620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 55246620 is about 7432.8070067775. The cubic root of 55246620 is about 380.8628132237.

The spelling of 55246620 in words is "fifty-five million, two hundred forty-six thousand, six hundred twenty".