53449637 has 4 divisors (see below), whose sum is σ = 53469420. Its totient is φ = 53429856.

The previous prime is 53449633. The next prime is 53449657. The reversal of 53449637 is 73694435.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36590401 + 16859236 = 6049^2 + 4106^2 .

It is a cyclic number.

It is not a de Polignac number, because 53449637 - 2² = 53449633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53449594 and 53449603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53449633) 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, 5048 + ... + 11505.

It is an arithmetic number, because the mean of its divisors is an integer number (13367355).

Almost surely, 2^53449637 is an apocalyptic number.

It is an amenable number.

53449637 is a deficient number, since it is larger than the sum of its proper divisors (19783).

53449637 is a wasteful number, since it uses less digits than its factorization.

53449637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19782.

The product of its digits is 272160, while the sum is 41.

The square root of 53449637 is about 7310.9258647589. The cubic root of 53449637 is about 376.6878277545.

The spelling of 53449637 in words is "fifty-three million, four hundred forty-nine thousand, six hundred thirty-seven".