51156299 has 2 divisors, whose sum is σ = 51156300. Its totient is φ = 51156298.

The previous prime is 51156271. The next prime is 51156337. The reversal of 51156299 is 99265115.

It is an a-pointer prime, because the next prime (51156337) can be obtained adding 51156299 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51156299 is a prime.

It is not a weakly prime, because it can be changed into another prime (51156499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25578149 + 25578150.

It is an arithmetic number, because the mean of its divisors is an integer number (25578150).

Almost surely, 2^51156299 is an apocalyptic number.

51156299 is a deficient number, since it is larger than the sum of its proper divisors (1).

51156299 is an equidigital number, since it uses as much as digits as its factorization.

51156299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 38.

The square root of 51156299 is about 7152.3631759021. The cubic root of 51156299 is about 371.2214297036.

The spelling of 51156299 in words is "fifty-one million, one hundred fifty-six thousand, two hundred ninety-nine".