51051506 has 16 divisors (see below), whose sum is σ = 83734560. Its totient is φ = 23150880.

The previous prime is 51051487. The next prime is 51051509. The reversal of 51051506 is 60515015.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51051509) 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, 7790 + ... + 12758.

It is an arithmetic number, because the mean of its divisors is an integer number (5233410).

Almost surely, 2^51051506 is an apocalyptic number.

51051506 is a deficient number, since it is larger than the sum of its proper divisors (32683054).

51051506 is a wasteful number, since it uses less digits than its factorization.

51051506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 51051506 is about 7145.0336598227. The cubic root of 51051506 is about 370.9677756974.

The spelling of 51051506 in words is "fifty-one million, fifty-one thousand, five hundred six".