53681651 has 2 divisors, whose sum is σ = 53681652. Its totient is φ = 53681650.

The previous prime is 53681627. The next prime is 53681653. The reversal of 53681651 is 15618635.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53681651 - 2¹⁴ = 53665267 is a prime.

Together with 53681653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53681653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26840825 + 26840826.

It is an arithmetic number, because the mean of its divisors is an integer number (26840826).

Almost surely, 2^53681651 is an apocalyptic number.

53681651 is a deficient number, since it is larger than the sum of its proper divisors (1).

53681651 is an equidigital number, since it uses as much as digits as its factorization.

53681651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 53681651 is about 7326.7763033956. The cubic root of 53681651 is about 377.2320827537.

The spelling of 53681651 in words is "fifty-three million, six hundred eighty-one thousand, six hundred fifty-one".