53678581 has 4 divisors (see below), whose sum is σ = 58558464. Its totient is φ = 48798700.

The previous prime is 53678567. The next prime is 53678633. The reversal of 53678581 is 18587635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53678581 - 2¹¹ = 53676533 is a prime.

It is a super-2 number, since 2×53678581² = 5762780116347122, 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 (53678501) 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, 2439925 + ... + 2439946.

It is an arithmetic number, because the mean of its divisors is an integer number (14639616).

Almost surely, 2^53678581 is an apocalyptic number.

It is an amenable number.

53678581 is a deficient number, since it is larger than the sum of its proper divisors (4879883).

53678581 is a wasteful number, since it uses less digits than its factorization.

53678581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4879882.

The product of its digits is 201600, while the sum is 43.

The square root of 53678581 is about 7326.5667948910. The cubic root of 53678581 is about 377.2248914413.

The spelling of 53678581 in words is "fifty-three million, six hundred seventy-eight thousand, five hundred eighty-one".