53550409 has 8 divisors (see below), whose sum is σ = 58558752. Its totient is φ = 48565440.

The previous prime is 53550407. The next prime is 53550449. The reversal of 53550409 is 90405535.

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

It is not a de Polignac number, because 53550409 - 2¹ = 53550407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53550403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859 + ... + 10384.

It is an arithmetic number, because the mean of its divisors is an integer number (7319844).

Almost surely, 2^53550409 is an apocalyptic number.

It is an amenable number.

53550409 is a deficient number, since it is larger than the sum of its proper divisors (5008343).

53550409 is a wasteful number, since it uses less digits than its factorization.

53550409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11687.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 53550409 is about 7317.8144961457. The cubic root of 53550409 is about 376.9244103083.

The spelling of 53550409 in words is "fifty-three million, five hundred fifty thousand, four hundred nine".