52421111 has 2 divisors, whose sum is σ = 52421112. Its totient is φ = 52421110.

The previous prime is 52421107. The next prime is 52421137. The reversal of 52421111 is 11112425.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52421111 - 2² = 52421107 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52421111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52421141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26210555 + 26210556.

It is an arithmetic number, because the mean of its divisors is an integer number (26210556).

Almost surely, 2^52421111 is an apocalyptic number.

52421111 is a deficient number, since it is larger than the sum of its proper divisors (1).

52421111 is an equidigital number, since it uses as much as digits as its factorization.

52421111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80, while the sum is 17.

The square root of 52421111 is about 7240.2424683155. The cubic root of 52421111 is about 374.2559730697.

Adding to 52421111 its reverse (11112425), we get a palindrome (63533536).

The spelling of 52421111 in words is "fifty-two million, four hundred twenty-one thousand, one hundred eleven".