52354721 has 4 divisors (see below), whose sum is σ = 52369200. Its totient is φ = 52340244.

The previous prime is 52354703. The next prime is 52354727. The reversal of 52354721 is 12745325.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 52354721 - 2¹⁴ = 52338337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52354727) 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, 3290 + ... + 10748.

It is an arithmetic number, because the mean of its divisors is an integer number (13092300).

Almost surely, 2^52354721 is an apocalyptic number.

It is an amenable number.

52354721 is a deficient number, since it is larger than the sum of its proper divisors (14479).

52354721 is an equidigital number, since it uses as much as digits as its factorization.

52354721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14478.

The product of its digits is 8400, while the sum is 29.

The square root of 52354721 is about 7235.6562245590. The cubic root of 52354721 is about 374.0979111092.

The spelling of 52354721 in words is "fifty-two million, three hundred fifty-four thousand, seven hundred twenty-one".