51016255 has 4 divisors (see below), whose sum is σ = 61219512. Its totient is φ = 40813000.

The previous prime is 51016243. The next prime is 51016261. The reversal of 51016255 is 55261015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55261015 = 5 ⋅11052203.

It is not a de Polignac number, because 51016255 - 2¹⁷ = 50885183 is a prime.

It is a super-3 number, since 3×51016255³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5101621 + ... + 5101630.

It is an arithmetic number, because the mean of its divisors is an integer number (15304878).

Almost surely, 2^51016255 is an apocalyptic number.

51016255 is a deficient number, since it is larger than the sum of its proper divisors (10203257).

51016255 is a wasteful number, since it uses less digits than its factorization.

51016255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10203256.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 51016255 is about 7142.5664155120. The cubic root of 51016255 is about 370.8823717781.

The spelling of 51016255 in words is "fifty-one million, sixteen thousand, two hundred fifty-five".