54772220 has 24 divisors (see below), whose sum is σ = 115533600. Its totient is φ = 21811392.

The previous prime is 54772219. The next prime is 54772243. The reversal of 54772220 is 2227745.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1400 + ... + 10559.

It is an arithmetic number, because the mean of its divisors is an integer number (4813900).

Almost surely, 2^54772220 is an apocalyptic number.

It is an amenable number.

54772220 is an abundant number, since it is smaller than the sum of its proper divisors (60761380).

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

54772220 is a wasteful number, since it uses less digits than its factorization.

54772220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12197 (or 12195 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 54772220 is about 7400.8256296173. The cubic root of 54772220 is about 379.7695278356.

Adding to 54772220 its reverse (2227745), we get a palindrome (56999965).

The spelling of 54772220 in words is "fifty-four million, seven hundred seventy-two thousand, two hundred twenty".