51061983 has 8 divisors (see below), whose sum is σ = 77808768. Its totient is φ = 29178264.

The previous prime is 51061957. The next prime is 51062003. The reversal of 51061983 is 38916015.

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

It is not a de Polignac number, because 51061983 - 2⁵ = 51061951 is a prime.

It is a super-2 number, since 2×51061983² = 5214652215784578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51061583) 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, 1215741 + ... + 1215782.

It is an arithmetic number, because the mean of its divisors is an integer number (9726096).

Almost surely, 2^51061983 is an apocalyptic number.

51061983 is a deficient number, since it is larger than the sum of its proper divisors (26746785).

51061983 is a wasteful number, since it uses less digits than its factorization.

51061983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431533.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 51061983 is about 7145.7667888058. The cubic root of 51061983 is about 370.9931511391.

Adding to 51061983 its reverse (38916015), we get a palindrome (89977998).

The spelling of 51061983 in words is "fifty-one million, sixty-one thousand, nine hundred eighty-three".