51836961 has 16 divisors (see below), whose sum is σ = 79835328. Its totient is φ = 29568000.

The previous prime is 51836957. The next prime is 51836969. The reversal of 51836961 is 16963815.

It is not a de Polignac number, because 51836961 - 2² = 51836957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51836969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45640 + ... + 46761.

It is an arithmetic number, because the mean of its divisors is an integer number (4989708).

Almost surely, 2^51836961 is an apocalyptic number.

51836961 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51836961 is a deficient number, since it is larger than the sum of its proper divisors (27998367).

51836961 is a wasteful number, since it uses less digits than its factorization.

51836961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92432.

The product of its digits is 38880, while the sum is 39.

The square root of 51836961 is about 7199.7889552403. The cubic root of 51836961 is about 372.8606143996.

The spelling of 51836961 in words is "fifty-one million, eight hundred thirty-six thousand, nine hundred sixty-one".