51961056 has 48 divisors (see below), whose sum is σ = 155885184. Its totient is φ = 14845824.

The previous prime is 51961051. The next prime is 51961093. The reversal of 51961056 is 65016915.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51961051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37990 + ... + 39333.

It is an arithmetic number, because the mean of its divisors is an integer number (3247608).

Almost surely, 2^51961056 is an apocalyptic number.

51961056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51961056 is an abundant number, since it is smaller than the sum of its proper divisors (103924128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51961056 is a wasteful number, since it uses less digits than its factorization.

51961056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77343 (or 77335 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 51961056 is about 7208.4017646077. The cubic root of 51961056 is about 373.1579136195.

The spelling of 51961056 in words is "fifty-one million, nine hundred sixty-one thousand, fifty-six".