53749511 has 2 divisors, whose sum is σ = 53749512. Its totient is φ = 53749510.

The previous prime is 53749489. The next prime is 53749513. The reversal of 53749511 is 11594735.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53749511 is a prime.

Together with 53749513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53749513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26874755 + 26874756.

It is an arithmetic number, because the mean of its divisors is an integer number (26874756).

Almost surely, 2^53749511 is an apocalyptic number.

53749511 is a deficient number, since it is larger than the sum of its proper divisors (1).

53749511 is an equidigital number, since it uses as much as digits as its factorization.

53749511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 53749511 is about 7331.4057997085. The cubic root of 53749511 is about 377.3909712474.

The spelling of 53749511 in words is "fifty-three million, seven hundred forty-nine thousand, five hundred eleven".