52421413 has 4 divisors (see below), whose sum is σ = 57187008. Its totient is φ = 47655820.

The previous prime is 52421371. The next prime is 52421431. The reversal of 52421413 is 31412425.

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 a de Polignac number, because none of the positive numbers 2^k-52421413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52421483) 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, 2382781 + ... + 2382802.

It is an arithmetic number, because the mean of its divisors is an integer number (14296752).

Almost surely, 2^52421413 is an apocalyptic number.

It is an amenable number.

52421413 is a deficient number, since it is larger than the sum of its proper divisors (4765595).

52421413 is a wasteful number, since it uses less digits than its factorization.

52421413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765594.

The product of its digits is 960, while the sum is 22.

The square root of 52421413 is about 7240.2633239406. The cubic root of 52421413 is about 374.2566917693.

Adding to 52421413 its reverse (31412425), we get a palindrome (83833838).

The spelling of 52421413 in words is "fifty-two million, four hundred twenty-one thousand, four hundred thirteen".