51464161 has 12 divisors (see below), whose sum is σ = 60544260. Its totient is φ = 43612800.

The previous prime is 51464131. The next prime is 51464167. The reversal of 51464161 is 16146415.

It can be written as a sum of positive squares in 2 ways, for example, as 18113536 + 33350625 = 4256^2 + 5775^2 .

It is not a de Polignac number, because 51464161 - 2⁷ = 51464033 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51464167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1540 + ... + 10261.

It is an arithmetic number, because the mean of its divisors is an integer number (5045355).

Almost surely, 2^51464161 is an apocalyptic number.

It is an amenable number.

51464161 is a deficient number, since it is larger than the sum of its proper divisors (9080099).

51464161 is a wasteful number, since it uses less digits than its factorization.

51464161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11904 (or 11897 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 51464161 is about 7173.8525911814. The cubic root of 51464161 is about 371.9646192311.

The spelling of 51464161 in words is "fifty-one million, four hundred sixty-four thousand, one hundred sixty-one".