51343636 has 12 divisors (see below), whose sum is σ = 93758112. Its totient is φ = 24555608.

The previous prime is 51343631. The next prime is 51343637. The reversal of 51343636 is 63634315.

It is a junction number, because it is equal to n+sod(n) for n = 51343598 and 51343607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51343631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278950 + ... + 279133.

It is an arithmetic number, because the mean of its divisors is an integer number (7813176).

Almost surely, 2^51343636 is an apocalyptic number.

It is an amenable number.

51343636 is a deficient number, since it is larger than the sum of its proper divisors (42414476).

51343636 is a wasteful number, since it uses less digits than its factorization.

51343636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558110 (or 558108 counting only the distinct ones).

The product of its digits is 19440, while the sum is 31.

The square root of 51343636 is about 7165.4473691459. The cubic root of 51343636 is about 371.6740216749.

The spelling of 51343636 in words is "fifty-one million, three hundred forty-three thousand, six hundred thirty-six".