55151203 has 2 divisors, whose sum is σ = 55151204. Its totient is φ = 55151202.

The previous prime is 55151183. The next prime is 55151207. The reversal of 55151203 is 30215155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55151203 is a prime.

It is not a weakly prime, because it can be changed into another prime (55151207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27575601 + 27575602.

It is an arithmetic number, because the mean of its divisors is an integer number (27575602).

Almost surely, 2^55151203 is an apocalyptic number.

55151203 is a deficient number, since it is larger than the sum of its proper divisors (1).

55151203 is an equidigital number, since it uses as much as digits as its factorization.

55151203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 55151203 is about 7426.3855946214. The cubic root of 55151203 is about 380.6434228570.

Adding to 55151203 its reverse (30215155), we get a palindrome (85366358).

The spelling of 55151203 in words is "fifty-five million, one hundred fifty-one thousand, two hundred three".