53215777 has 2 divisors, whose sum is σ = 53215778. Its totient is φ = 53215776.

The previous prime is 53215753. The next prime is 53215781. The reversal of 53215777 is 77751235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36372961 + 16842816 = 6031^2 + 4104^2 .

It is a cyclic number.

It is not a de Polignac number, because 53215777 - 2⁷ = 53215649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53215717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26607888 + 26607889.

It is an arithmetic number, because the mean of its divisors is an integer number (26607889).

Almost surely, 2^53215777 is an apocalyptic number.

It is an amenable number.

53215777 is a deficient number, since it is larger than the sum of its proper divisors (1).

53215777 is an equidigital number, since it uses as much as digits as its factorization.

53215777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51450, while the sum is 37.

The square root of 53215777 is about 7294.9144614587. The cubic root of 53215777 is about 376.1376462430.

The spelling of 53215777 in words is "fifty-three million, two hundred fifteen thousand, seven hundred seventy-seven".