53451811 has 4 divisors (see below), whose sum is σ = 61087792. Its totient is φ = 45815832.

The previous prime is 53451809. The next prime is 53451821. The reversal of 53451811 is 11815435.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53451811 - 2¹ = 53451809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53451811.

It is not an unprimeable number, because it can be changed into a prime (53451821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817980 + ... + 3817993.

It is an arithmetic number, because the mean of its divisors is an integer number (15271948).

Almost surely, 2^53451811 is an apocalyptic number.

53451811 is a deficient number, since it is larger than the sum of its proper divisors (7635981).

53451811 is an equidigital number, since it uses as much as digits as its factorization.

53451811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7635980.

The product of its digits is 2400, while the sum is 28.

The square root of 53451811 is about 7311.0745448258. The cubic root of 53451811 is about 376.6929347941.

The spelling of 53451811 in words is "fifty-three million, four hundred fifty-one thousand, eight hundred eleven".