53504021040 has 40 divisors (see below), whose sum is σ = 165862465968. Its totient is φ = 14267738880.

The previous prime is 53504021029. The next prime is 53504021057. The reversal of 53504021040 is 4012040535.

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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 53504021040.

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, 111466471 + ... + 111466950.

Almost surely, 2^53504021040 is an apocalyptic number.

It is an amenable number.

53504021040 is an abundant number, since it is smaller than the sum of its proper divisors (112358444928).

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

53504021040 is a wasteful number, since it uses less digits than its factorization.

53504021040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222933437 (or 222933431 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 53504021040 its reverse (4012040535), we get a palindrome (57516061575).

The spelling of 53504021040 in words is "fifty-three billion, five hundred four million, twenty-one thousand, forty".