54381624 has 32 divisors (see below), whose sum is σ = 148314240. Its totient is φ = 16479200.

The previous prime is 54381619. The next prime is 54381647. The reversal of 54381624 is 42618345.

It is a super-2 number, since 2×54381624² = 5914722057754752, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 102732 + ... + 103259.

It is an arithmetic number, because the mean of its divisors is an integer number (4634820).

Almost surely, 2^54381624 is an apocalyptic number.

It is an amenable number.

54381624 is an abundant number, since it is smaller than the sum of its proper divisors (93932616).

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

54381624 is a wasteful number, since it uses less digits than its factorization.

54381624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206011 (or 206007 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 54381624 is about 7374.3897374630. The cubic root of 54381624 is about 378.8646258511.

Adding to 54381624 its reverse (42618345), we get a palindrome (96999969).

The spelling of 54381624 in words is "fifty-four million, three hundred eighty-one thousand, six hundred twenty-four".