42551303 has 2 divisors, whose sum is σ = 42551304. Its totient is φ = 42551302.

The previous prime is 42551297. The next prime is 42551351. The reversal of 42551303 is 30315524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42551303 - 2⁴ = 42551287 is a prime.

It is a super-2 number, since 2×42551303² = 3621226773995618, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42551363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21275651 + 21275652.

It is an arithmetic number, because the mean of its divisors is an integer number (21275652).

Almost surely, 2^42551303 is an apocalyptic number.

42551303 is a deficient number, since it is larger than the sum of its proper divisors (1).

42551303 is an equidigital number, since it uses as much as digits as its factorization.

42551303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 42551303 is about 6523.1359789598. The cubic root of 42551303 is about 349.1169658552.

Adding to 42551303 its reverse (30315524), we get a palindrome (72866827).

The spelling of 42551303 in words is "forty-two million, five hundred fifty-one thousand, three hundred three".