51562879452 has 576 divisors, whose sum is σ = 175341895680. Its totient is φ = 12796185600.

The previous prime is 51562879411. The next prime is 51562879457. The reversal of 51562879452 is 25497826515.

51562879452 is a `hidden beast` number, since 5 + 1 + 5 + 628 + 7 + 9 + 4 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51562879457) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 155778927 + ... + 155779257.

Almost surely, 2^51562879452 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 51562879452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87670947840).

51562879452 is an abundant number, since it is smaller than the sum of its proper divisors (123779016228).

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

51562879452 is a wasteful number, since it uses less digits than its factorization.

51562879452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 414 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 51562879452 in words is "fifty-one billion, five hundred sixty-two million, eight hundred seventy-nine thousand, four hundred fifty-two".