55785113 has 2 divisors, whose sum is σ = 55785114. Its totient is φ = 55785112.

The previous prime is 55785043. The next prime is 55785127. The reversal of 55785113 is 31158755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51955264 + 3829849 = 7208^2 + 1957^2 .

It is a cyclic number.

It is not a de Polignac number, because 55785113 - 2¹⁴ = 55768729 is a prime.

It is a super-2 number, since 2×55785113² = 6223957664845538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55785013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27892556 + 27892557.

It is an arithmetic number, because the mean of its divisors is an integer number (27892557).

Almost surely, 2^55785113 is an apocalyptic number.

It is an amenable number.

55785113 is a deficient number, since it is larger than the sum of its proper divisors (1).

55785113 is an equidigital number, since it uses as much as digits as its factorization.

55785113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 35.

The square root of 55785113 is about 7468.9432318100. The cubic root of 55785113 is about 382.0962473230.

The spelling of 55785113 in words is "fifty-five million, seven hundred eighty-five thousand, one hundred thirteen".