51654751 has 2 divisors, whose sum is σ = 51654752. Its totient is φ = 51654750.

The previous prime is 51654719. The next prime is 51654761. The reversal of 51654751 is 15745615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51654751 - 2⁵ = 51654719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51654761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25827375 + 25827376.

It is an arithmetic number, because the mean of its divisors is an integer number (25827376).

Almost surely, 2^51654751 is an apocalyptic number.

51654751 is a deficient number, since it is larger than the sum of its proper divisors (1).

51654751 is an equidigital number, since it uses as much as digits as its factorization.

51654751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 34.

The square root of 51654751 is about 7187.1239727724. The cubic root of 51654751 is about 372.4232257732.

The spelling of 51654751 in words is "fifty-one million, six hundred fifty-four thousand, seven hundred fifty-one".