51036261 has 32 divisors (see below), whose sum is σ = 78336000. Its totient is φ = 29341440.

The previous prime is 51036257. The next prime is 51036269. The reversal of 51036261 is 16263015.

It is not a de Polignac number, because 51036261 - 2² = 51036257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51036269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29190 + ... + 30888.

It is an arithmetic number, because the mean of its divisors is an integer number (2448000).

Almost surely, 2^51036261 is an apocalyptic number.

51036261 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51036261 is a deficient number, since it is larger than the sum of its proper divisors (27299739).

51036261 is a wasteful number, since it uses less digits than its factorization.

51036261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 51036261 is about 7143.9667552418. The cubic root of 51036261 is about 370.9308458905.

Adding to 51036261 its reverse (16263015), we get a palindrome (67299276).

The spelling of 51036261 in words is "fifty-one million, thirty-six thousand, two hundred sixty-one".