54951220 has 48 divisors (see below), whose sum is σ = 119927808. Its totient is φ = 21127680.

The previous prime is 54951203. The next prime is 54951223. The reversal of 54951220 is 2215945.

54951220 = 1907² + 1908² + ... + 1921².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54951223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162892 + ... + 163228.

It is an arithmetic number, because the mean of its divisors is an integer number (2498496).

Almost surely, 2^54951220 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 54951220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59963904).

54951220 is an abundant number, since it is smaller than the sum of its proper divisors (64976588).

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

54951220 is a wasteful number, since it uses less digits than its factorization.

54951220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 54951220 is about 7412.9090106381. The cubic root of 54951220 is about 380.1827837180.

The spelling of 54951220 in words is "fifty-four million, nine hundred fifty-one thousand, two hundred twenty".