51149051 has 2 divisors, whose sum is σ = 51149052. Its totient is φ = 51149050.

The previous prime is 51149041. The next prime is 51149089. The reversal of 51149051 is 15094115.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51149051 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51149051.

It is not a weakly prime, because it can be changed into another prime (51149041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25574525 + 25574526.

It is an arithmetic number, because the mean of its divisors is an integer number (25574526).

Almost surely, 2^51149051 is an apocalyptic number.

51149051 is a deficient number, since it is larger than the sum of its proper divisors (1).

51149051 is an equidigital number, since it uses as much as digits as its factorization.

51149051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 51149051 is about 7151.8564722735. The cubic root of 51149051 is about 371.2038969002.

The spelling of 51149051 in words is "fifty-one million, one hundred forty-nine thousand, fifty-one".