53437409 has 16 divisors (see below), whose sum is σ = 58226688. Its totient is φ = 48851712.

The previous prime is 53437399. The next prime is 53437429. The reversal of 53437409 is 90473435.

It is a cyclic number.

It is not a de Polignac number, because 53437409 - 2⁴ = 53437393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53437429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114194 + ... + 114660.

It is an arithmetic number, because the mean of its divisors is an integer number (3639168).

Almost surely, 2^53437409 is an apocalyptic number.

It is an amenable number.

53437409 is a deficient number, since it is larger than the sum of its proper divisors (4789279).

53437409 is a wasteful number, since it uses less digits than its factorization.

53437409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 53437409 is about 7310.0895343354. The cubic root of 53437409 is about 376.6590998384.

The spelling of 53437409 in words is "fifty-three million, four hundred thirty-seven thousand, four hundred nine".