51205226 has 8 divisors (see below), whose sum is σ = 77094180. Its totient is φ = 25507168.

The previous prime is 51205223. The next prime is 51205229. The reversal of 51205226 is 62250215.

It is an interprime number because it is at equal distance from previous prime (51205223) and next prime (51205229).

It can be written as a sum of positive squares in 2 ways, for example, as 50481025 + 724201 = 7105^2 + 851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51205226² = 5243950339422152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51205223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47051 + ... + 48126.

Almost surely, 2^51205226 is an apocalyptic number.

51205226 is a deficient number, since it is larger than the sum of its proper divisors (25888954).

51205226 is a wasteful number, since it uses less digits than its factorization.

51205226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95448.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51205226 is about 7155.7826965329. The cubic root of 51205226 is about 371.3397400838.

The spelling of 51205226 in words is "fifty-one million, two hundred five thousand, two hundred twenty-six".