55424513 has 2 divisors, whose sum is σ = 55424514. Its totient is φ = 55424512.

The previous prime is 55424507. The next prime is 55424527. The reversal of 55424513 is 31542455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34374769 + 21049744 = 5863^2 + 4588^2 .

It is a cyclic number.

It is not a de Polignac number, because 55424513 - 2¹⁸ = 55162369 is a prime.

It is not a weakly prime, because it can be changed into another prime (55424533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27712256 + 27712257.

It is an arithmetic number, because the mean of its divisors is an integer number (27712257).

Almost surely, 2^55424513 is an apocalyptic number.

It is an amenable number.

55424513 is a deficient number, since it is larger than the sum of its proper divisors (1).

55424513 is an equidigital number, since it uses as much as digits as its factorization.

55424513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 29.

The square root of 55424513 is about 7444.7641332684. The cubic root of 55424513 is about 381.2711654289.

Adding to 55424513 its reverse (31542455), we get a palindrome (86966968).

The spelling of 55424513 in words is "fifty-five million, four hundred twenty-four thousand, five hundred thirteen".