51212276 has 12 divisors (see below), whose sum is σ = 89782980. Its totient is φ = 25560000.

The previous prime is 51212263. The next prime is 51212299. The reversal of 51212276 is 67221215.

It can be written as a sum of positive squares in 2 ways, for example, as 35688676 + 15523600 = 5974^2 + 3940^2 .

It is a congruent 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, 8975 + ... + 13526.

It is an arithmetic number, because the mean of its divisors is an integer number (7481915).

Almost surely, 2^51212276 is an apocalyptic number.

It is an amenable number.

51212276 is a deficient number, since it is larger than the sum of its proper divisors (38570704).

51212276 is a wasteful number, since it uses less digits than its factorization.

51212276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23074 (or 23072 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 51212276 is about 7156.2752881649. The cubic root of 51212276 is about 371.3567814761.

It can be divided in two parts, 5121 and 2276, that multiplied together give a square (11655396 = 3414²).

The spelling of 51212276 in words is "fifty-one million, two hundred twelve thousand, two hundred seventy-six".