51623371 has 2 divisors, whose sum is σ = 51623372. Its totient is φ = 51623370.

The previous prime is 51623357. The next prime is 51623389. The reversal of 51623371 is 17332615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51623371 - 2⁹ = 51622859 is a prime.

It is not a weakly prime, because it can be changed into another prime (51627371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25811685 + 25811686.

It is an arithmetic number, because the mean of its divisors is an integer number (25811686).

Almost surely, 2^51623371 is an apocalyptic number.

51623371 is a deficient number, since it is larger than the sum of its proper divisors (1).

51623371 is an equidigital number, since it uses as much as digits as its factorization.

51623371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 28.

The square root of 51623371 is about 7184.9405703875. The cubic root of 51623371 is about 372.3477954213.

Adding to 51623371 its reverse (17332615), we get a palindrome (68955986).

The spelling of 51623371 in words is "fifty-one million, six hundred twenty-three thousand, three hundred seventy-one".