51012355 has 4 divisors (see below), whose sum is σ = 61214832. Its totient is φ = 40809880.

The previous prime is 51012301. The next prime is 51012389. The reversal of 51012355 is 55321015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55321015 = 5 ⋅11064203.

It is a de Polignac number, because none of the positive numbers 2^k-51012355 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 5101231 + ... + 5101240.

It is an arithmetic number, because the mean of its divisors is an integer number (15303708).

Almost surely, 2^51012355 is an apocalyptic number.

51012355 is a deficient number, since it is larger than the sum of its proper divisors (10202477).

51012355 is a wasteful number, since it uses less digits than its factorization.

51012355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202476.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 51012355 is about 7142.2933991821. The cubic root of 51012355 is about 370.8729206851.

The spelling of 51012355 in words is "fifty-one million, twelve thousand, three hundred fifty-five".