51012206 has 32 divisors (see below), whose sum is σ = 96629760. Its totient is φ = 19679616.

The previous prime is 51012197. The next prime is 51012209. The reversal of 51012206 is 60221015.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51012209) 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, 815 + ... + 10133.

It is an arithmetic number, because the mean of its divisors is an integer number (3019680).

Almost surely, 2^51012206 is an apocalyptic number.

51012206 is a deficient number, since it is larger than the sum of its proper divisors (45617554).

51012206 is a wasteful number, since it uses less digits than its factorization.

51012206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9368.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 51012206 is about 7142.2829683512. The cubic root of 51012206 is about 370.8725595953.

The spelling of 51012206 in words is "fifty-one million, twelve thousand, two hundred six".