It is a happy number.
The square root of 40551424 is 6368.
It is a Duffinian number.
It is an unprimeable number.
Almost surely, 240551424 is an apocalyptic number.
40551424 is the 6368-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 40551424
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
40551424 is an frugal number, since it uses more digits than its factorization.
40551424 is an evil number, because the sum of its binary digits is even.
The cubic root of 40551424 is about 343.5595589098.
Multiplying 40551424 by its sum of digits (25), we get a square (1013785600 = 318402).
Adding to 40551424 its reverse (42415504), we get a palindrome (82966928).
The spelling of 40551424 in words is "forty million, five hundred fifty-one thousand, four hundred twenty-four".