53961390252 has 144 divisors (see below), whose sum is σ = 170137723392. Its totient is φ = 14009552640.

The previous prime is 53961390221. The next prime is 53961390253. The reversal of 53961390252 is 25209316935.

53961390252 is a `hidden beast` number, since 5 + 3 + 9 + 6 + 1 + 390 + 252 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 53961390198 and 53961390207.

It is not an unprimeable number, because it can be changed into a prime (53961390253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10927528 + ... + 10932464.

It is an arithmetic number, because the mean of its divisors is an integer number (1181511968).

Almost surely, 2^53961390252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53961390252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85068861696).

53961390252 is an abundant number, since it is smaller than the sum of its proper divisors (116176333140).

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

53961390252 is a wasteful number, since it uses less digits than its factorization.

53961390252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8908 (or 8903 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 45.

The spelling of 53961390252 in words is "fifty-three billion, nine hundred sixty-one million, three hundred ninety thousand, two hundred fifty-two".