51351206 has 4 divisors (see below), whose sum is σ = 77026812. Its totient is φ = 25675602.

The previous prime is 51351197. The next prime is 51351217. The reversal of 51351206 is 60215315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60215315 = 5 ⋅12043063.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12837800 + ... + 12837803.

It is an arithmetic number, because the mean of its divisors is an integer number (19256703).

Almost surely, 2^51351206 is an apocalyptic number.

51351206 is a deficient number, since it is larger than the sum of its proper divisors (25675606).

51351206 is a wasteful number, since it uses less digits than its factorization.

51351206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25675605.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 51351206 is about 7165.9755790820. The cubic root of 51351206 is about 371.6922870615.

The spelling of 51351206 in words is "fifty-one million, three hundred fifty-one thousand, two hundred six".