51008061 has 16 divisors (see below), whose sum is σ = 73535616. Its totient is φ = 31263936.

The previous prime is 51008047. The next prime is 51008107. The reversal of 51008061 is 16080015.

It is not a de Polignac number, because 51008061 - 2⁵ = 51008029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51008011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7771 + ... + 12743.

It is an arithmetic number, because the mean of its divisors is an integer number (4595976).

Almost surely, 2^51008061 is an apocalyptic number.

It is an amenable number.

51008061 is a deficient number, since it is larger than the sum of its proper divisors (22527555).

51008061 is a wasteful number, since it uses less digits than its factorization.

51008061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5252.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 51008061 is about 7141.9927891311. The cubic root of 51008061 is about 370.8625142322.

Adding to 51008061 its reverse (16080015), we get a palindrome (67088076).

The spelling of 51008061 in words is "fifty-one million, eight thousand, sixty-one".