54311720 has 32 divisors (see below), whose sum is σ = 122411520. Its totient is φ = 21687360.

The previous prime is 54311713. The next prime is 54311723. The reversal of 54311720 is 2711345.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (54311723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43505 + ... + 44735.

It is an arithmetic number, because the mean of its divisors is an integer number (3825360).

Almost surely, 2^54311720 is an apocalyptic number.

It is an amenable number.

54311720 is an abundant number, since it is smaller than the sum of its proper divisors (68099800).

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

54311720 is a wasteful number, since it uses less digits than its factorization.

54311720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345 (or 2341 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 54311720 is about 7369.6485669264. The cubic root of 54311720 is about 378.7022210604.

The spelling of 54311720 in words is "fifty-four million, three hundred eleven thousand, seven hundred twenty".