53030581 has 4 divisors (see below), whose sum is σ = 54031212. Its totient is φ = 52029952.

The previous prime is 53030573. The next prime is 53030587. The reversal of 53030581 is 18503035.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18503035 = 5 ⋅3700607.

It can be written as a sum of positive squares in 2 ways, for example, as 44422225 + 8608356 = 6665^2 + 2934^2 .

It is a cyclic number.

It is not a de Polignac number, because 53030581 - 2³ = 53030573 is a prime.

It is a super-2 number, since 2×53030581² = 5624485042395122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53030587) 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, 500236 + ... + 500341.

It is an arithmetic number, because the mean of its divisors is an integer number (13507803).

Almost surely, 2^53030581 is an apocalyptic number.

It is an amenable number.

53030581 is a deficient number, since it is larger than the sum of its proper divisors (1000631).

53030581 is a wasteful number, since it uses less digits than its factorization.

53030581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000630.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 53030581 is about 7282.2098981010. The cubic root of 53030581 is about 375.7008074273.

The spelling of 53030581 in words is "fifty-three million, thirty thousand, five hundred eighty-one".