55424507 has 2 divisors, whose sum is σ = 55424508. Its totient is φ = 55424506.

The previous prime is 55424431. The next prime is 55424513. The reversal of 55424507 is 70542455.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55424507 is a prime.

It is not a weakly prime, because it can be changed into another prime (55424527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27712253 + 27712254.

It is an arithmetic number, because the mean of its divisors is an integer number (27712254).

Almost surely, 2^55424507 is an apocalyptic number.

55424507 is a deficient number, since it is larger than the sum of its proper divisors (1).

55424507 is an equidigital number, since it uses as much as digits as its factorization.

55424507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 55424507 is about 7444.7637303006. The cubic root of 55424507 is about 381.2711516707.

The spelling of 55424507 in words is "fifty-five million, four hundred twenty-four thousand, five hundred seven".