53215949 has 2 divisors, whose sum is σ = 53215950. Its totient is φ = 53215948.

The previous prime is 53215937. The next prime is 53215961. The reversal of 53215949 is 94951235.

It is a balanced prime because it is at equal distance from previous prime (53215937) and next prime (53215961).

It can be written as a sum of positive squares in only one way, i.e., 43494025 + 9721924 = 6595^2 + 3118^2 .

It is a cyclic number.

It is not a de Polignac number, because 53215949 - 2⁸ = 53215693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53215919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26607974 + 26607975.

It is an arithmetic number, because the mean of its divisors is an integer number (26607975).

Almost surely, 2^53215949 is an apocalyptic number.

It is an amenable number.

53215949 is a deficient number, since it is larger than the sum of its proper divisors (1).

53215949 is an equidigital number, since it uses as much as digits as its factorization.

53215949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 38.

The square root of 53215949 is about 7294.9262504840. The cubic root of 53215949 is about 376.1380514838.

The spelling of 53215949 in words is "fifty-three million, two hundred fifteen thousand, nine hundred forty-nine".