51620196 has 24 divisors (see below), whose sum is σ = 120566880. Its totient is φ = 17189632.

The previous prime is 51620161. The next prime is 51620197. The reversal of 51620196 is 69102615.

It is not an unprimeable number, because it can be changed into a prime (51620197) 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, 18100 + ... + 20756.

It is an arithmetic number, because the mean of its divisors is an integer number (5023620).

Almost surely, 2^51620196 is an apocalyptic number.

It is an amenable number.

51620196 is an abundant number, since it is smaller than the sum of its proper divisors (68946684).

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

51620196 is a wasteful number, since it uses less digits than its factorization.

51620196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283 (or 4281 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 51620196 is about 7184.7196187464. The cubic root of 51620196 is about 372.3401617438.

The spelling of 51620196 in words is "fifty-one million, six hundred twenty thousand, one hundred ninety-six".