51140737 has 2 divisors, whose sum is σ = 51140738. Its totient is φ = 51140736.

The previous prime is 51140689. The next prime is 51140767. The reversal of 51140737 is 73704115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50822641 + 318096 = 7129^2 + 564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51140737 is a prime.

It is not a weakly prime, because it can be changed into another prime (51140767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25570368 + 25570369.

It is an arithmetic number, because the mean of its divisors is an integer number (25570369).

Almost surely, 2^51140737 is an apocalyptic number.

It is an amenable number.

51140737 is a deficient number, since it is larger than the sum of its proper divisors (1).

51140737 is an equidigital number, since it uses as much as digits as its factorization.

51140737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 51140737 is about 7151.2752009694. The cubic root of 51140737 is about 371.1837834190.

The spelling of 51140737 in words is "fifty-one million, one hundred forty thousand, seven hundred thirty-seven".