53726591 has 2 divisors, whose sum is σ = 53726592. Its totient is φ = 53726590.

The previous prime is 53726573. The next prime is 53726609. The reversal of 53726591 is 19562735.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (53726573) and next prime (53726609).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53726591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53726501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26863295 + 26863296.

It is an arithmetic number, because the mean of its divisors is an integer number (26863296).

Almost surely, 2^53726591 is an apocalyptic number.

53726591 is a deficient number, since it is larger than the sum of its proper divisors (1).

53726591 is an equidigital number, since it uses as much as digits as its factorization.

53726591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 38.

The square root of 53726591 is about 7329.8424948971. The cubic root of 53726591 is about 377.3373209556.

The spelling of 53726591 in words is "fifty-three million, seven hundred twenty-six thousand, five hundred ninety-one".