51103979 has 2 divisors, whose sum is σ = 51103980. Its totient is φ = 51103978.

The previous prime is 51103973. The next prime is 51104033. The reversal of 51103979 is 97930115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51103979 - 2²⁰ = 50055403 is a prime.

It is a super-2 number, since 2×51103979² = 5223233339264882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51103973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25551989 + 25551990.

It is an arithmetic number, because the mean of its divisors is an integer number (25551990).

Almost surely, 2^51103979 is an apocalyptic number.

51103979 is a deficient number, since it is larger than the sum of its proper divisors (1).

51103979 is an equidigital number, since it uses as much as digits as its factorization.

51103979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 51103979 is about 7148.7047078474. The cubic root of 51103979 is about 371.0948312155.

The spelling of 51103979 in words is "fifty-one million, one hundred three thousand, nine hundred seventy-nine".