51064551 has 24 divisors (see below), whose sum is σ = 76649040. Its totient is φ = 32731776.

The previous prime is 51064537. The next prime is 51064553. The reversal of 51064551 is 15546015.

It is a happy number.

51064551 is a `hidden beast` number, since 5 + 10 + 645 + 5 + 1 = 666.

It is not a de Polignac number, because 51064551 - 2⁶ = 51064487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51064553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28776 + ... + 30498.

It is an arithmetic number, because the mean of its divisors is an integer number (3193710).

Almost surely, 2^51064551 is an apocalyptic number.

51064551 is a deficient number, since it is larger than the sum of its proper divisors (25584489).

51064551 is a wasteful number, since it uses less digits than its factorization.

51064551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 51064551 is about 7145.9464733512. The cubic root of 51064551 is about 370.9993703416. Note that the first 3 decimals are identical.

It can be divided in two parts, 51064 and 551, that added together give a palindrome (51615).

The spelling of 51064551 in words is "fifty-one million, sixty-four thousand, five hundred fifty-one".