54273640 has 32 divisors (see below), whose sum is σ = 122326560. Its totient is φ = 21672000.

The previous prime is 54273623. The next prime is 54273641. The reversal of 54273640 is 4637245.

It is a Smith number, since the sum of its digits (31) 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 (54273641) 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, 41395 + ... + 42685.

It is an arithmetic number, because the mean of its divisors is an integer number (3822705).

Almost surely, 2^54273640 is an apocalyptic number.

It is an amenable number.

54273640 is an abundant number, since it is smaller than the sum of its proper divisors (68052920).

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

54273640 is a wasteful number, since it uses less digits than its factorization.

54273640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353 (or 2349 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 54273640 is about 7367.0645443080. The cubic root of 54273640 is about 378.6136928860.

The spelling of 54273640 in words is "fifty-four million, two hundred seventy-three thousand, six hundred forty".