53219977 has 2 divisors, whose sum is σ = 53219978. Its totient is φ = 53219976.

The previous prime is 53219951. The next prime is 53219987. The reversal of 53219977 is 77991235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30074256 + 23145721 = 5484^2 + 4811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53219977 is a prime.

It is not a weakly prime, because it can be changed into another prime (53219917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26609988 + 26609989.

It is an arithmetic number, because the mean of its divisors is an integer number (26609989).

Almost surely, 2^53219977 is an apocalyptic number.

It is an amenable number.

53219977 is a deficient number, since it is larger than the sum of its proper divisors (1).

53219977 is an equidigital number, since it uses as much as digits as its factorization.

53219977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 43.

The square root of 53219977 is about 7295.2023275575. The cubic root of 53219977 is about 376.1475414072.

The spelling of 53219977 in words is "fifty-three million, two hundred nineteen thousand, nine hundred seventy-seven".