54257784 has 32 divisors (see below), whose sum is σ = 155022720. Its totient is φ = 15502176.

The previous prime is 54257779. The next prime is 54257789. The reversal of 54257784 is 48775245.

It is an interprime number because it is at equal distance from previous prime (54257779) and next prime (54257789).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54257789) 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, 161314 + ... + 161649.

It is an arithmetic number, because the mean of its divisors is an integer number (4844460).

Almost surely, 2^54257784 is an apocalyptic number.

It is an amenable number.

54257784 is an abundant number, since it is smaller than the sum of its proper divisors (100764936).

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

54257784 is a wasteful number, since it uses less digits than its factorization.

54257784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322979 (or 322975 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The square root of 54257784 is about 7365.9883247260. The cubic root of 54257784 is about 378.5768187335.

The spelling of 54257784 in words is "fifty-four million, two hundred fifty-seven thousand, seven hundred eighty-four".