51206236 has 6 divisors (see below), whose sum is σ = 89610920. Its totient is φ = 25603116.

The previous prime is 51206231. The next prime is 51206333. The reversal of 51206236 is 63260215.

It is a self number, because there is not a number n which added to its sum of digits gives 51206236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51206231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6400776 + ... + 6400783.

Almost surely, 2^51206236 is an apocalyptic number.

It is an amenable number.

51206236 is a deficient number, since it is larger than the sum of its proper divisors (38404684).

51206236 is a wasteful number, since it uses less digits than its factorization.

51206236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12801563 (or 12801561 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 51206236 is about 7155.8532684789. The cubic root of 51206236 is about 371.3421815707.

The spelling of 51206236 in words is "fifty-one million, two hundred six thousand, two hundred thirty-six".