51142303 has 2 divisors, whose sum is σ = 51142304. Its totient is φ = 51142302.

The previous prime is 51142277. The next prime is 51142361. The reversal of 51142303 is 30324115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51142303 - 2²¹ = 49045151 is a prime.

It is a super-2 number, since 2×51142303² = 5231070312287618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51140303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25571151 + 25571152.

It is an arithmetic number, because the mean of its divisors is an integer number (25571152).

Almost surely, 2^51142303 is an apocalyptic number.

51142303 is a deficient number, since it is larger than the sum of its proper divisors (1).

51142303 is an equidigital number, since it uses as much as digits as its factorization.

51142303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51142303 is about 7151.3846910930. The cubic root of 51142303 is about 371.1875721004.

Adding to 51142303 its reverse (30324115), we get a palindrome (81466418).

The spelling of 51142303 in words is "fifty-one million, one hundred forty-two thousand, three hundred three".