53451749 has 8 divisors (see below), whose sum is σ = 57932280. Its totient is φ = 49023936.

The previous prime is 53451721. The next prime is 53451763. The reversal of 53451749 is 94715435.

It can be written as a sum of positive squares in 4 ways, for example, as 3678724 + 49773025 = 1918^2 + 7055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53451749 - 2⁸ = 53451493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53451779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11054 + ... + 15135.

It is an arithmetic number, because the mean of its divisors is an integer number (7241535).

Almost surely, 2^53451749 is an apocalyptic number.

It is an amenable number.

53451749 is a deficient number, since it is larger than the sum of its proper divisors (4480531).

53451749 is a wasteful number, since it uses less digits than its factorization.

53451749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26359.

The product of its digits is 75600, while the sum is 38.

The square root of 53451749 is about 7311.0703046818. The cubic root of 53451749 is about 376.6927891491.

The spelling of 53451749 in words is "fifty-three million, four hundred fifty-one thousand, seven hundred forty-nine".