51214769 has 2 divisors, whose sum is σ = 51214770. Its totient is φ = 51214768.

The previous prime is 51214753. The next prime is 51214811. The reversal of 51214769 is 96741215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45064369 + 6150400 = 6713^2 + 2480^2 .

It is a cyclic number.

It is not a de Polignac number, because 51214769 - 2⁴ = 51214753 is a prime.

It is a super-2 number, since 2×51214769² = 5245905127446722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51214069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25607384 + 25607385.

It is an arithmetic number, because the mean of its divisors is an integer number (25607385).

Almost surely, 2^51214769 is an apocalyptic number.

It is an amenable number.

51214769 is a deficient number, since it is larger than the sum of its proper divisors (1).

51214769 is an equidigital number, since it uses as much as digits as its factorization.

51214769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 51214769 is about 7156.4494688358. The cubic root of 51214769 is about 371.3628072282.

The spelling of 51214769 in words is "fifty-one million, two hundred fourteen thousand, seven hundred sixty-nine".