53240021235 has 24 divisors (see below), whose sum is σ = 97711099200. Its totient is φ = 26724402432.

The previous prime is 53240021221. The next prime is 53240021243. The reversal of 53240021235 is 53212004235.

It is a happy number.

53240021235 is a `hidden beast` number, since 5 + 3 + 2 + 400 + 21 + 235 = 666.

It is not a de Polignac number, because 53240021235 - 2¹⁸ = 53239759091 is a prime.

It is a super-2 number, since 2×53240021235² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53240021199 and 53240021208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34796635 + ... + 34798164.

It is an arithmetic number, because the mean of its divisors is an integer number (4071295800).

Almost surely, 2^53240021235 is an apocalyptic number.

53240021235 is a deficient number, since it is larger than the sum of its proper divisors (44471077965).

53240021235 is a wasteful number, since it uses less digits than its factorization.

53240021235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69594827 (or 69594824 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The spelling of 53240021235 in words is "fifty-three billion, two hundred forty million, twenty-one thousand, two hundred thirty-five".