55225147 has 2 divisors, whose sum is σ = 55225148. Its totient is φ = 55225146.

The previous prime is 55225133. The next prime is 55225151. The reversal of 55225147 is 74152255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55225147 - 2¹¹ = 55223099 is a prime.

It is a super-2 number, since 2×55225147² = 6099633722343218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55225447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27612573 + 27612574.

It is an arithmetic number, because the mean of its divisors is an integer number (27612574).

Almost surely, 2^55225147 is an apocalyptic number.

55225147 is a deficient number, since it is larger than the sum of its proper divisors (1).

55225147 is an equidigital number, since it uses as much as digits as its factorization.

55225147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14000, while the sum is 31.

The square root of 55225147 is about 7431.3623919171. The cubic root of 55225147 is about 380.8134628321.

The spelling of 55225147 in words is "fifty-five million, two hundred twenty-five thousand, one hundred forty-seven".