51563412 has 24 divisors (see below), whose sum is σ = 133683200. Its totient is φ = 17187768.

The previous prime is 51563411. The next prime is 51563423. The reversal of 51563412 is 21436515.

51563412 is a `hidden beast` number, since 5 + 15 + 634 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51563411) 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, 238612 + ... + 238827.

Almost surely, 2^51563412 is an apocalyptic number.

It is an amenable number.

51563412 is an abundant number, since it is smaller than the sum of its proper divisors (82119788).

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

51563412 is a wasteful number, since it uses less digits than its factorization.

51563412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477452 (or 477444 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 51563412 is about 7180.7668114206. The cubic root of 51563412 is about 372.2035826347.

Adding to 51563412 its reverse (21436515), we get a palindrome (72999927).

The spelling of 51563412 in words is "fifty-one million, five hundred sixty-three thousand, four hundred twelve".