55224720007 has 2 divisors, whose sum is σ = 55224720008. Its totient is φ = 55224720006.

The previous prime is 55224719999. The next prime is 55224720049. The reversal of 55224720007 is 70002742255.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55224720007 - 2³ = 55224719999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55224721007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27612360003 + 27612360004.

It is an arithmetic number, because the mean of its divisors is an integer number (27612360004).

Almost surely, 2^55224720007 is an apocalyptic number.

55224720007 is a deficient number, since it is larger than the sum of its proper divisors (1).

55224720007 is an equidigital number, since it uses as much as digits as its factorization.

55224720007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39200, while the sum is 34.

The spelling of 55224720007 in words is "fifty-five billion, two hundred twenty-four million, seven hundred twenty thousand, seven".