51626291 has 2 divisors, whose sum is σ = 51626292. Its totient is φ = 51626290.

The previous prime is 51626279. The next prime is 51626299. The reversal of 51626291 is 19262615.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51626291 - 2⁶ = 51626227 is a prime.

It is equal to p_3092792 and since 51626291 and 3092792 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51626299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25813145 + 25813146.

It is an arithmetic number, because the mean of its divisors is an integer number (25813146).

Almost surely, 2^51626291 is an apocalyptic number.

51626291 is a deficient number, since it is larger than the sum of its proper divisors (1).

51626291 is an equidigital number, since it uses as much as digits as its factorization.

51626291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 51626291 is about 7185.1437703083. The cubic root of 51626291 is about 372.3548157239.

The spelling of 51626291 in words is "fifty-one million, six hundred twenty-six thousand, two hundred ninety-one".