53919649 has 9 divisors (see below), whose sum is σ = 62782707. Its totient is φ = 46172784.

The previous prime is 53919643. The next prime is 53919667. The reversal of 53919649 is 94691935.

The square root of 53919649 is 7343.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 48902049 + 5017600 = 6993^2 + 2240^2 .

It is not a de Polignac number, because 53919649 - 2³ = 53919641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53919599 and 53919608.

It is not an unprimeable number, because it can be changed into a prime (53919641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 50877 + ... + 51925.

Almost surely, 2^53919649 is an apocalyptic number.

53919649 is the 7343-rd square number.

53919649 is the 3672-nd centered octagonal number.

It is an amenable number.

53919649 is a deficient number, since it is larger than the sum of its proper divisors (8863058).

53919649 is an frugal number, since it uses more digits than its factorization.

53919649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 1056 counting only the distinct ones).

The product of its digits is 262440, while the sum is 46.

The cubic root of 53919649 is about 377.7887479866.

The spelling of 53919649 in words is "fifty-three million, nine hundred nineteen thousand, six hundred forty-nine".