54210640 has 40 divisors (see below), whose sum is σ = 137500128. Its totient is φ = 19712640.

The previous prime is 54210623. The next prime is 54210641. The reversal of 54210640 is 4601245.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54210641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29922 + ... + 31681.

Almost surely, 2^54210640 is an apocalyptic number.

It is an amenable number.

54210640 is an abundant number, since it is smaller than the sum of its proper divisors (83289488).

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

54210640 is a wasteful number, since it uses less digits than its factorization.

54210640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61627 (or 61621 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 54210640 is about 7362.7875156085. The cubic root of 54210640 is about 378.4671398640.

Adding to 54210640 its reverse (4601245), we get a palindrome (58811885).

The spelling of 54210640 in words is "fifty-four million, two hundred ten thousand, six hundred forty".