51551170 has 16 divisors (see below), whose sum is σ = 101227968. Its totient is φ = 18745840.

The previous prime is 51551147. The next prime is 51551173. The reversal of 51551170 is 7115515.

It is not an unprimeable number, because it can be changed into a prime (51551173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234214 + ... + 234433.

It is an arithmetic number, because the mean of its divisors is an integer number (6326748).

Almost surely, 2^51551170 is an apocalyptic number.

51551170 is a deficient number, since it is larger than the sum of its proper divisors (49676798).

51551170 is a wasteful number, since it uses less digits than its factorization.

51551170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468665.

The product of its (nonzero) digits is 875, while the sum is 25.

The square root of 51551170 is about 7179.9143448930. The cubic root of 51551170 is about 372.1741245575.

Adding to 51551170 its reverse (7115515), we get a palindrome (58666685).

The spelling of 51551170 in words is "fifty-one million, five hundred fifty-one thousand, one hundred seventy".