53685451 has 2 divisors, whose sum is σ = 53685452. Its totient is φ = 53685450.

The previous prime is 53685433. The next prime is 53685481. The reversal of 53685451 is 15458635.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53685451 - 2¹³ = 53677259 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53685451.

It is not a weakly prime, because it can be changed into another prime (53685481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26842725 + 26842726.

It is an arithmetic number, because the mean of its divisors is an integer number (26842726).

Almost surely, 2^53685451 is an apocalyptic number.

53685451 is a deficient number, since it is larger than the sum of its proper divisors (1).

53685451 is an equidigital number, since it uses as much as digits as its factorization.

53685451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 37.

The square root of 53685451 is about 7327.0356215867. The cubic root of 53685451 is about 377.2409836728.

The spelling of 53685451 in words is "fifty-three million, six hundred eighty-five thousand, four hundred fifty-one".