52421311 has 4 divisors (see below), whose sum is σ = 52768624. Its totient is φ = 52074000.

The previous prime is 52421297. The next prime is 52421363. The reversal of 52421311 is 11312425.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52421311 - 2¹⁹ = 51897023 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 (52421371) 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, 173430 + ... + 173731.

It is an arithmetic number, because the mean of its divisors is an integer number (13192156).

Almost surely, 2^52421311 is an apocalyptic number.

52421311 is a deficient number, since it is larger than the sum of its proper divisors (347313).

52421311 is a wasteful number, since it uses less digits than its factorization.

52421311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347312.

The product of its digits is 240, while the sum is 19.

The square root of 52421311 is about 7240.2562799945. The cubic root of 52421311 is about 374.2564490300.

Adding to 52421311 its reverse (11312425), we get a palindrome (63733736).

The spelling of 52421311 in words is "fifty-two million, four hundred twenty-one thousand, three hundred eleven".