51154423 has 2 divisors, whose sum is σ = 51154424. Its totient is φ = 51154422.

The previous prime is 51154409. The next prime is 51154427. The reversal of 51154423 is 32445115.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51154423 - 2⁹ = 51153911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51154427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25577211 + 25577212.

It is an arithmetic number, because the mean of its divisors is an integer number (25577212).

Almost surely, 2^51154423 is an apocalyptic number.

51154423 is a deficient number, since it is larger than the sum of its proper divisors (1).

51154423 is an equidigital number, since it uses as much as digits as its factorization.

51154423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 51154423 is about 7152.2320292340. The cubic root of 51154423 is about 371.2168918466.

Adding to 51154423 its reverse (32445115), we get a palindrome (83599538).

The spelling of 51154423 in words is "fifty-one million, one hundred fifty-four thousand, four hundred twenty-three".