51011266 has 4 divisors (see below), whose sum is σ = 76516902. Its totient is φ = 25505632.

The previous prime is 51011243. The next prime is 51011267. The reversal of 51011266 is 66211015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50908225 + 103041 = 7135^2 + 321^2 .

It is not an unprimeable number, because it can be changed into a prime (51011267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752815 + ... + 12752818.

Almost surely, 2^51011266 is an apocalyptic number.

51011266 is a deficient number, since it is larger than the sum of its proper divisors (25505636).

51011266 is a wasteful number, since it uses less digits than its factorization.

51011266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25505635.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 51011266 is about 7142.2171627584. The cubic root of 51011266 is about 370.8702815631.

The spelling of 51011266 in words is "fifty-one million, eleven thousand, two hundred sixty-six".