53780117 has 2 divisors, whose sum is σ = 53780118. Its totient is φ = 53780116.

The previous prime is 53780113. The next prime is 53780131. The reversal of 53780117 is 71108735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46430596 + 7349521 = 6814^2 + 2711^2 .

It is a cyclic number.

It is not a de Polignac number, because 53780117 - 2² = 53780113 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53780113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26890058 + 26890059.

It is an arithmetic number, because the mean of its divisors is an integer number (26890059).

Almost surely, 2^53780117 is an apocalyptic number.

It is an amenable number.

53780117 is a deficient number, since it is larger than the sum of its proper divisors (1).

53780117 is an equidigital number, since it uses as much as digits as its factorization.

53780117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 53780117 is about 7333.4928240232. The cubic root of 53780117 is about 377.4625888689.

The spelling of 53780117 in words is "fifty-three million, seven hundred eighty thousand, one hundred seventeen".