55424531 has 2 divisors, whose sum is σ = 55424532. Its totient is φ = 55424530.

The previous prime is 55424527. The next prime is 55424533. The reversal of 55424531 is 13542455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55424531 - 2² = 55424527 is a prime.

It is a super-2 number, since 2×55424531² = 6143757273139922, which contains 22 as substring.

Together with 55424533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 55424494 and 55424503.

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, 27712265 + 27712266.

It is an arithmetic number, because the mean of its divisors is an integer number (27712266).

Almost surely, 2^55424531 is an apocalyptic number.

55424531 is a deficient number, since it is larger than the sum of its proper divisors (1).

55424531 is an equidigital number, since it uses as much as digits as its factorization.

55424531 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 55424531 is about 7444.7653421716. The cubic root of 55424531 is about 381.2712067036.

Adding to 55424531 its reverse (13542455), we get a palindrome (68966986).

It can be divided in two parts, 55424 and 531, that added together give a palindrome (55955).

The spelling of 55424531 in words is "fifty-five million, four hundred twenty-four thousand, five hundred thirty-one".