51131051 has 2 divisors, whose sum is σ = 51131052. Its totient is φ = 51131050.

The previous prime is 51131039. The next prime is 51131057. The reversal of 51131051 is 15013115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51131051 - 2⁶ = 51130987 is a prime.

It is a super-2 number, since 2×51131051² = 5228768752729202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51131057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25565525 + 25565526.

It is an arithmetic number, because the mean of its divisors is an integer number (25565526).

Almost surely, 2^51131051 is an apocalyptic number.

51131051 is a deficient number, since it is larger than the sum of its proper divisors (1).

51131051 is an equidigital number, since it uses as much as digits as its factorization.

51131051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 51131051 is about 7150.5979470251. The cubic root of 51131051 is about 371.1603480043.

Adding to 51131051 its reverse (15013115), we get a palindrome (66144166).

The spelling of 51131051 in words is "fifty-one million, one hundred thirty-one thousand, fifty-one".