51396377 has 2 divisors, whose sum is σ = 51396378. Its totient is φ = 51396376.

The previous prime is 51396353. The next prime is 51396391. The reversal of 51396377 is 77369315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27081616 + 24314761 = 5204^2 + 4931^2 .

It is a cyclic number.

It is not a de Polignac number, because 51396377 - 2⁶ = 51396313 is a prime.

It is a super-2 number, since 2×51396377² = 5283175137452258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51396077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25698188 + 25698189.

It is an arithmetic number, because the mean of its divisors is an integer number (25698189).

Almost surely, 2^51396377 is an apocalyptic number.

It is an amenable number.

51396377 is a deficient number, since it is larger than the sum of its proper divisors (1).

51396377 is an equidigital number, since it uses as much as digits as its factorization.

51396377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 41.

The square root of 51396377 is about 7169.1266553186. The cubic root of 51396377 is about 371.8012412809.

The spelling of 51396377 in words is "fifty-one million, three hundred ninety-six thousand, three hundred seventy-seven".