56215349 has 2 divisors, whose sum is σ = 56215350. Its totient is φ = 56215348.

The previous prime is 56215331. The next prime is 56215361. The reversal of 56215349 is 94351265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51984100 + 4231249 = 7210^2 + 2057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56215349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56215309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28107674 + 28107675.

It is an arithmetic number, because the mean of its divisors is an integer number (28107675).

Almost surely, 2^56215349 is an apocalyptic number.

It is an amenable number.

56215349 is a deficient number, since it is larger than the sum of its proper divisors (1).

56215349 is an equidigital number, since it uses as much as digits as its factorization.

56215349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 56215349 is about 7497.6895774632. The cubic root of 56215349 is about 383.0760233302.

The spelling of 56215349 in words is "fifty-six million, two hundred fifteen thousand, three hundred forty-nine".