53409319 has 4 divisors (see below), whose sum is σ = 54417096. Its totient is φ = 52401544.

The previous prime is 53409277. The next prime is 53409353. The reversal of 53409319 is 91390435.

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 53409319 - 2²¹ = 51312167 is a prime.

It is a super-2 number, since 2×53409319² = 5705110712087522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53409119) 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, 503809 + ... + 503914.

It is an arithmetic number, because the mean of its divisors is an integer number (13604274).

Almost surely, 2^53409319 is an apocalyptic number.

53409319 is a deficient number, since it is larger than the sum of its proper divisors (1007777).

53409319 is a wasteful number, since it uses less digits than its factorization.

53409319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007776.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 53409319 is about 7308.1679646817. The cubic root of 53409319 is about 376.5930898481.

The spelling of 53409319 in words is "fifty-three million, four hundred nine thousand, three hundred nineteen".