51950985 has 8 divisors (see below), whose sum is σ = 83121600. Its totient is φ = 27707184.

The previous prime is 51950957. The next prime is 51950989. The reversal of 51950985 is 58905915.

It is a happy number.

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

It is not a de Polignac number, because 51950985 - 2¹¹ = 51948937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51950989) 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, 1731685 + ... + 1731714.

It is an arithmetic number, because the mean of its divisors is an integer number (10390200).

Almost surely, 2^51950985 is an apocalyptic number.

It is an amenable number.

51950985 is a deficient number, since it is larger than the sum of its proper divisors (31170615).

51950985 is a wasteful number, since it uses less digits than its factorization.

51950985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463407.

The product of its (nonzero) digits is 81000, while the sum is 42.

The square root of 51950985 is about 7207.7031709137. The cubic root of 51950985 is about 373.1338037927.

The spelling of 51950985 in words is "fifty-one million, nine hundred fifty thousand, nine hundred eighty-five".