53450399 has 4 divisors (see below), whose sum is σ = 53468520. Its totient is φ = 53432280.

The previous prime is 53450387. The next prime is 53450437. The reversal of 53450399 is 99305435.

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 53450399 - 2²⁴ = 36673183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53450339) 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 3 ways as a sum of consecutive naturals, for example, 3497 + ... + 10914.

It is an arithmetic number, because the mean of its divisors is an integer number (13367130).

Almost surely, 2^53450399 is an apocalyptic number.

53450399 is a deficient number, since it is larger than the sum of its proper divisors (18121).

53450399 is a wasteful number, since it uses less digits than its factorization.

53450399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18120.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 53450399 is about 7310.9779783556. The cubic root of 53450399 is about 376.6896178182.

The spelling of 53450399 in words is "fifty-three million, four hundred fifty thousand, three hundred ninety-nine".