51201197 has 8 divisors (see below), whose sum is σ = 53948544. Its totient is φ = 48497328.

The previous prime is 51201187. The next prime is 51201217. The reversal of 51201197 is 79110215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51201197 - 2⁶ = 51201133 is a prime.

It is a super-3 number, since 3×51201197³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51201107) 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, 8438 + ... + 13175.

It is an arithmetic number, because the mean of its divisors is an integer number (6743568).

Almost surely, 2^51201197 is an apocalyptic number.

It is an amenable number.

51201197 is a deficient number, since it is larger than the sum of its proper divisors (2747347).

51201197 is a wasteful number, since it uses less digits than its factorization.

51201197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21739.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 51201197 is about 7155.5011704282. The cubic root of 51201197 is about 371.3300004070.

The spelling of 51201197 in words is "fifty-one million, two hundred one thousand, one hundred ninety-seven".