56277946357 has 2 divisors, whose sum is σ = 56277946358. Its totient is φ = 56277946356.

The previous prime is 56277946343. The next prime is 56277946379. The reversal of 56277946357 is 75364977265.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31385311281 + 24892635076 = 177159^2 + 157774^2 .

It is a cyclic number.

It is not a de Polignac number, because 56277946357 - 2¹¹ = 56277944309 is a prime.

It is a super-2 number, since 2×56277946357² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56277946295 and 56277946304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56277946337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28138973178 + 28138973179.

It is an arithmetic number, because the mean of its divisors is an integer number (28138973179).

Almost surely, 2^56277946357 is an apocalyptic number.

It is an amenable number.

56277946357 is a deficient number, since it is larger than the sum of its proper divisors (1).

56277946357 is an equidigital number, since it uses as much as digits as its factorization.

56277946357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66679200, while the sum is 61.

The spelling of 56277946357 in words is "fifty-six billion, two hundred seventy-seven million, nine hundred forty-six thousand, three hundred fifty-seven".