53734721 has 2 divisors, whose sum is σ = 53734722. Its totient is φ = 53734720.

The previous prime is 53734669. The next prime is 53734817. The reversal of 53734721 is 12743735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50566321 + 3168400 = 7111^2 + 1780^2 .

It is a cyclic number.

It is not a de Polignac number, because 53734721 - 2⁶ = 53734657 is a prime.

It is not a weakly prime, because it can be changed into another prime (53734321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26867360 + 26867361.

It is an arithmetic number, because the mean of its divisors is an integer number (26867361).

Almost surely, 2^53734721 is an apocalyptic number.

It is an amenable number.

53734721 is a deficient number, since it is larger than the sum of its proper divisors (1).

53734721 is an equidigital number, since it uses as much as digits as its factorization.

53734721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 32.

The square root of 53734721 is about 7330.3970560946. The cubic root of 53734721 is about 377.3563531061.

The spelling of 53734721 in words is "fifty-three million, seven hundred thirty-four thousand, seven hundred twenty-one".