53574821 has 4 divisors (see below), whose sum is σ = 53673312. Its totient is φ = 53476332.

The previous prime is 53574817. The next prime is 53574827. The reversal of 53574821 is 12847535.

It is a happy number.

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 53574821 - 2² = 53574817 is a prime.

It is a super-2 number, since 2×53574821² = 5740522890364082, 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 (53574827) 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, 48425 + ... + 49518.

It is an arithmetic number, because the mean of its divisors is an integer number (13418328).

Almost surely, 2^53574821 is an apocalyptic number.

It is an amenable number.

53574821 is a deficient number, since it is larger than the sum of its proper divisors (98491).

53574821 is an equidigital number, since it uses as much as digits as its factorization.

53574821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98490.

The product of its digits is 33600, while the sum is 35.

The square root of 53574821 is about 7319.4822904356. The cubic root of 53574821 is about 376.9816777255.

The spelling of 53574821 in words is "fifty-three million, five hundred seventy-four thousand, eight hundred twenty-one".