54211720 has 16 divisors (see below), whose sum is σ = 121976460. Its totient is φ = 21684672.

The previous prime is 54211711. The next prime is 54211741. The reversal of 54211720 is 2711245.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53963716 + 248004 = 7346^2 + 498^2 .

It is a junction number, because it is equal to n+sod(n) for n = 54211691 and 54211700.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677607 + ... + 677686.

Almost surely, 2^54211720 is an apocalyptic number.

It is an amenable number.

54211720 is an abundant number, since it is smaller than the sum of its proper divisors (67764740).

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

54211720 is a wasteful number, since it uses less digits than its factorization.

54211720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355304 (or 1355300 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 54211720 is about 7362.8608570310. The cubic root of 54211720 is about 378.4696531578.

Adding to 54211720 its reverse (2711245), we get a palindrome (56922965).

The spelling of 54211720 in words is "fifty-four million, two hundred eleven thousand, seven hundred twenty".