51065554 has 8 divisors (see below), whose sum is σ = 76646268. Its totient is φ = 25516800.

The previous prime is 51065533. The next prime is 51065579. The reversal of 51065554 is 45556015.

It can be written as a sum of positive squares in 2 ways, for example, as 49914225 + 1151329 = 7065^2 + 1073^2 .

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

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, 3487 + ... + 10690.

Almost surely, 2^51065554 is an apocalyptic number.

51065554 is a deficient number, since it is larger than the sum of its proper divisors (25580714).

51065554 is a wasteful number, since it uses less digits than its factorization.

51065554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15980.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 51065554 is about 7146.0166526534. The cubic root of 51065554 is about 371.0017993582.

The spelling of 51065554 in words is "fifty-one million, sixty-five thousand, five hundred fifty-four".