53314721 has 2 divisors, whose sum is σ = 53314722. Its totient is φ = 53314720.

The previous prime is 53314717. The next prime is 53314787. The reversal of 53314721 is 12741335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47458321 + 5856400 = 6889^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 53314721 - 2² = 53314717 is a prime.

It is not a weakly prime, because it can be changed into another prime (53316721) 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, 26657360 + 26657361.

It is an arithmetic number, because the mean of its divisors is an integer number (26657361).

Almost surely, 2^53314721 is an apocalyptic number.

It is an amenable number.

53314721 is a deficient number, since it is larger than the sum of its proper divisors (1).

53314721 is an equidigital number, since it uses as much as digits as its factorization.

53314721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 53314721 is about 7301.6930228544. The cubic root of 53314721 is about 376.3706192672.

The spelling of 53314721 in words is "fifty-three million, three hundred fourteen thousand, seven hundred twenty-one".