54156220 has 48 divisors (see below), whose sum is σ = 123016320. Its totient is φ = 19948544.

The previous prime is 54156211. The next prime is 54156247. The reversal of 54156220 is 2265145.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14286 + ... + 17674.

It is an arithmetic number, because the mean of its divisors is an integer number (2562840).

Almost surely, 2^54156220 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 54156220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61508160).

54156220 is an abundant number, since it is smaller than the sum of its proper divisors (68860100).

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

54156220 is a wasteful number, since it uses less digits than its factorization.

54156220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462 (or 3460 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 54156220 is about 7359.0909764726. The cubic root of 54156220 is about 378.3404545398.

The spelling of 54156220 in words is "fifty-four million, one hundred fifty-six thousand, two hundred twenty".