53181977 has 2 divisors, whose sum is σ = 53181978. Its totient is φ = 53181976.

The previous prime is 53181943. The next prime is 53182021. The reversal of 53181977 is 77918135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37650496 + 15531481 = 6136^2 + 3941^2 .

It is a cyclic number.

It is not a de Polignac number, because 53181977 - 2⁸ = 53181721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53181907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26590988 + 26590989.

It is an arithmetic number, because the mean of its divisors is an integer number (26590989).

Almost surely, 2^53181977 is an apocalyptic number.

It is an amenable number.

53181977 is a deficient number, since it is larger than the sum of its proper divisors (1).

53181977 is an equidigital number, since it uses as much as digits as its factorization.

53181977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 41.

The square root of 53181977 is about 7292.5974110738. The cubic root of 53181977 is about 376.0579947702.

The spelling of 53181977 in words is "fifty-three million, one hundred eighty-one thousand, nine hundred seventy-seven".