51274687 has 2 divisors, whose sum is σ = 51274688. Its totient is φ = 51274686.

The previous prime is 51274681. The next prime is 51274693. The reversal of 51274687 is 78647215.

It is a balanced prime because it is at equal distance from previous prime (51274681) and next prime (51274693).

It is a cyclic number.

It is not a de Polignac number, because 51274687 - 2¹⁵ = 51241919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51274681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25637343 + 25637344.

It is an arithmetic number, because the mean of its divisors is an integer number (25637344).

Almost surely, 2^51274687 is an apocalyptic number.

51274687 is a deficient number, since it is larger than the sum of its proper divisors (1).

51274687 is an equidigital number, since it uses as much as digits as its factorization.

51274687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 51274687 is about 7160.6345389218. The cubic root of 51274687 is about 371.5075743544.

The spelling of 51274687 in words is "fifty-one million, two hundred seventy-four thousand, six hundred eighty-seven".