51475993 has 2 divisors, whose sum is σ = 51475994. Its totient is φ = 51475992.

The previous prime is 51475987. The next prime is 51475999. The reversal of 51475993 is 39957415.

It is a balanced prime because it is at equal distance from previous prime (51475987) and next prime (51475999).

It can be written as a sum of positive squares in only one way, i.e., 41062464 + 10413529 = 6408^2 + 3227^2 .

It is a cyclic number.

It is not a de Polignac number, because 51475993 - 2⁵ = 51475961 is a prime.

It is not a weakly prime, because it can be changed into another prime (51475999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25737996 + 25737997.

It is an arithmetic number, because the mean of its divisors is an integer number (25737997).

Almost surely, 2^51475993 is an apocalyptic number.

It is an amenable number.

51475993 is a deficient number, since it is larger than the sum of its proper divisors (1).

51475993 is an equidigital number, since it uses as much as digits as its factorization.

51475993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 43.

The square root of 51475993 is about 7174.6772052825. The cubic root of 51475993 is about 371.9931228736.

The spelling of 51475993 in words is "fifty-one million, four hundred seventy-five thousand, nine hundred ninety-three".