51134661 has 6 divisors (see below), whose sum is σ = 73861190. Its totient is φ = 34089768.

The previous prime is 51134641. The next prime is 51134669. The reversal of 51134661 is 16643115.

It can be written as a sum of positive squares in only one way, i.e., 28037025 + 23097636 = 5295^2 + 4806^2 .

It is not a de Polignac number, because 51134661 - 2⁶ = 51134597 is a prime.

It is a super-2 number, since 2×51134661² = 5229507111169842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51134669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2840806 + ... + 2840823.

Almost surely, 2^51134661 is an apocalyptic number.

It is an amenable number.

51134661 is a deficient number, since it is larger than the sum of its proper divisors (22726529).

51134661 is a wasteful number, since it uses less digits than its factorization.

51134661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681635 (or 5681632 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 51134661 is about 7150.8503690121. The cubic root of 51134661 is about 371.1690827966.

Adding to 51134661 its reverse (16643115), we get a palindrome (67777776).

It can be divided in two parts, 511 and 34661, that multiplied together give a palindrome (17711771).

The spelling of 51134661 in words is "fifty-one million, one hundred thirty-four thousand, six hundred sixty-one".