51155066 has 8 divisors (see below), whose sum is σ = 76763700. Its totient is φ = 25567168.

The previous prime is 51155063. The next prime is 51155077. The reversal of 51155066 is 66055115.

It can be written as a sum of positive squares in 2 ways, for example, as 50481025 + 674041 = 7105^2 + 821^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51155063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4940 + ... + 11256.

Almost surely, 2^51155066 is an apocalyptic number.

51155066 is a deficient number, since it is larger than the sum of its proper divisors (25608634).

51155066 is a wasteful number, since it uses less digits than its factorization.

51155066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10368.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 51155066 is about 7152.2769800952. The cubic root of 51155066 is about 371.2184472120.

The spelling of 51155066 in words is "fifty-one million, one hundred fifty-five thousand, sixty-six".