56733961 has 2 divisors, whose sum is σ = 56733962. Its totient is φ = 56733960.

The previous prime is 56733959. The next prime is 56733973. The reversal of 56733961 is 16933765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49000000 + 7733961 = 7000^2 + 2781^2 .

It is a cyclic number.

It is not a de Polignac number, because 56733961 - 2¹ = 56733959 is a prime.

Together with 56733959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56733361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28366980 + 28366981.

It is an arithmetic number, because the mean of its divisors is an integer number (28366981).

Almost surely, 2^56733961 is an apocalyptic number.

56733961 is the 3369-th centered decagonal number.

It is an amenable number.

56733961 is a deficient number, since it is larger than the sum of its proper divisors (1).

56733961 is an equidigital number, since it uses as much as digits as its factorization.

56733961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 40.

The square root of 56733961 is about 7532.1949656126. The cubic root of 56733961 is about 384.2504356850.

The spelling of 56733961 in words is "fifty-six million, seven hundred thirty-three thousand, nine hundred sixty-one".