54102640 has 40 divisors (see below), whose sum is σ = 128473920. Its totient is φ = 21179136.

The previous prime is 54102617. The next prime is 54102641. The reversal of 54102640 is 4620145.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54102641) 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, 3435 + ... + 10954.

It is an arithmetic number, because the mean of its divisors is an integer number (3211848).

Almost surely, 2^54102640 is an apocalyptic number.

It is an amenable number.

54102640 is an abundant number, since it is smaller than the sum of its proper divisors (74371280).

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

54102640 is a wasteful number, since it uses less digits than its factorization.

54102640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14449 (or 14443 counting only the distinct ones).

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

The square root of 54102640 is about 7355.4496803391. The cubic root of 54102640 is about 378.2156417267.

Adding to 54102640 its reverse (4620145), we get a palindrome (58722785).

The spelling of 54102640 in words is "fifty-four million, one hundred two thousand, six hundred forty".