53912909 has 8 divisors (see below), whose sum is σ = 55987512. Its totient is φ = 51874560.

The previous prime is 53912893. The next prime is 53912917. The reversal of 53912909 is 90921935.

It can be written as a sum of positive squares in 4 ways, for example, as 8282884 + 45630025 = 2878^2 + 6755^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 53912909 - 2⁴ = 53912893 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 (53912609) 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, 6014 + ... + 11999.

It is an arithmetic number, because the mean of its divisors is an integer number (6998439).

Almost surely, 2^53912909 is an apocalyptic number.

It is an amenable number.

53912909 is a deficient number, since it is larger than the sum of its proper divisors (2074603).

53912909 is a wasteful number, since it uses less digits than its factorization.

53912909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18127.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 53912909 is about 7342.5410451696. The cubic root of 53912909 is about 377.7730060303.

The spelling of 53912909 in words is "fifty-three million, nine hundred twelve thousand, nine hundred nine".